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80866867354 = 2713444323447
BaseRepresentation
bin100101101010000001…
…0100111100010011010
321201201202021111110021
41023110002213202122
52311103404223404
6101052201341054
75561646013450
oct1132402474232
9251652244407
1080866867354
1131328269389
121380a19778a
1378198ca690
143cb1d4c9d0
152184653454
hex12d40a789a

80866867354 has 16 divisors (see below), whose sum is σ = 149292678528. Its totient is φ = 31991288112.

The previous prime is 80866867331. The next prime is 80866867387. The reversal of 80866867354 is 45376866808.

It is a super-2 number, since 2×808668673542 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80866867292 and 80866867301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222161542 + ... + 222161905.

It is an arithmetic number, because the mean of its divisors is an integer number (9330792408).

Almost surely, 280866867354 is an apocalyptic number.

80866867354 is a deficient number, since it is larger than the sum of its proper divisors (68425811174).

80866867354 is a wasteful number, since it uses less digits than its factorization.

80866867354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444323469.

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 80866867354 in words is "eighty billion, eight hundred sixty-six million, eight hundred sixty-seven thousand, three hundred fifty-four".

Divisors: 1 2 7 13 14 26 91 182 444323447 888646894 3110264129 5776204811 6220528258 11552409622 40433433677 80866867354