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12918929155288 = 23131933119752023
BaseRepresentation
bin1011101111111110110000…
…1011101110010011011000
31200202001000101101220111021
42323333230023232103120
53143130431330432123
643250512451012224
72502235051653502
oct273775413562330
950661011356437
1012918929155288
114130983792192
12154793729a074
13729332a402a0
143293cad7ad72
151760b7190c5d
hexbbfec2ee4d8

12918929155288 has 64 divisors (see below), whose sum is σ = 27542222265600. Its totient is φ = 5631696512640.

The previous prime is 12918929155201. The next prime is 12918929155339. The reversal of 12918929155288 is 88255192981921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9221956 + ... + 10530067.

It is an arithmetic number, because the mean of its divisors is an integer number (430347222900).

Almost surely, 212918929155288 is an apocalyptic number.

It is an amenable number.

12918929155288 is an abundant number, since it is smaller than the sum of its proper divisors (14623293110312).

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

12918929155288 is a wasteful number, since it uses less digits than its factorization.

12918929155288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19752392 (or 19752388 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 70.

The spelling of 12918929155288 in words is "twelve trillion, nine hundred eighteen billion, nine hundred twenty-nine million, one hundred fifty-five thousand, two hundred eighty-eight".

Divisors: 1 2 4 8 13 19 26 38 52 76 104 152 247 331 494 662 988 1324 1976 2648 4303 6289 8606 12578 17212 25156 34424 50312 81757 163514 327028 654056 19752023 39504046 79008092 158016184 256776299 375288437 513552598 750576874 1027105196 1501153748 2054210392 3002307496 4878749681 6537919613 9757499362 13075839226 19514998724 26151678452 39029997448 52303356904 84992954969 124220472647 169985909938 248440945294 339971819876 496881890588 679943639752 993763781176 1614866144411 3229732288822 6459464577644 12918929155288