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81201414442248 = 23324727397875851
BaseRepresentation
bin10010011101101000101101…
…011101101000110100001000
3101122111210001012002020121100
4102131220231131220310020
541120400444044122443
6444411225333341400
723050415514306612
oct2235505535506410
9348453035066540
1081201414442248
1123967365599671
129135465497860
1336403504b41a9
14160a252caddb2
1595c37d8bd3d3
hex49da2d768d08

81201414442248 has 96 divisors (see below), whose sum is σ = 224608111378560. Its totient is φ = 26490244406400.

The previous prime is 81201414442243. The next prime is 81201414442439. The reversal of 81201414442248 is 84224441410218.

81201414442248 is a `hidden beast` number, since 8 + 1 + 2 + 0 + 1 + 414 + 4 + 4 + 224 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (81201414442243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92273523 + ... + 93149373.

It is an arithmetic number, because the mean of its divisors is an integer number (2339667826860).

Almost surely, 281201414442248 is an apocalyptic number.

It is an amenable number.

81201414442248 is an abundant number, since it is smaller than the sum of its proper divisors (143406696936312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81201414442248 is a wasteful number, since it uses less digits than its factorization.

81201414442248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903307 (or 903300 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 45.

The spelling of 81201414442248 in words is "eighty-one trillion, two hundred one billion, four hundred fourteen million, four hundred forty-two thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 47 72 94 141 188 282 376 423 564 846 1128 1692 3384 27397 54794 82191 109588 164382 219176 246573 328764 493146 657528 875851 986292 1287659 1751702 1972584 2575318 2627553 3503404 3862977 5150636 5255106 7006808 7725954 7882659 10301272 10510212 11588931 15451908 15765318 21020424 23177862 30903816 31530636 41164997 46355724 63061272 82329994 92711448 123494991 164659988 246989982 329319976 370484973 493979964 740969946 987959928 1481939892 2963879784 23995689847 47991379694 71987069541 95982759388 143974139082 191965518776 215961208623 287948278164 431922417246 575896556328 863844834492 1127797422809 1727689668984 2255594845618 3383392268427 4511189691236 6766784536854 9022379382472 10150176805281 13533569073708 20300353610562 27067138147416 40600707221124 81201414442248