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12880658515 = 517719210761
BaseRepresentation
bin10111111111011111…
…10100000001010011
31020020200020020201111
423333233310001103
5202334422033030
65530045114151
7634123535164
oct137757640123
936220206644
1012880658515
11550a88342a
1225b5858957
1312a374873a
148a298176b
15505c2b62a
hex2ffbf4053

12880658515 has 16 divisors (see below), whose sum is σ = 16388853120. Its totient is φ = 9684843520.

The previous prime is 12880658509. The next prime is 12880658561. The reversal of 12880658515 is 51585608821.

It is not a de Polignac number, because 12880658515 - 27 = 12880658387 is a prime.

It is a super-2 number, since 2×128806585152 (a number of 21 digits) contains 22 as substring.

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, 44266 + ... + 166495.

It is an arithmetic number, because the mean of its divisors is an integer number (1024303320).

Almost surely, 212880658515 is an apocalyptic number.

12880658515 is a deficient number, since it is larger than the sum of its proper divisors (3508194605).

12880658515 is a wasteful number, since it uses less digits than its factorization.

12880658515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211502.

The product of its (nonzero) digits is 768000, while the sum is 49.

The spelling of 12880658515 in words is "twelve billion, eight hundred eighty million, six hundred fifty-eight thousand, five hundred fifteen".

Divisors: 1 5 17 85 719 3595 12223 61115 210761 1053805 3582937 17914685 151537159 757685795 2576131703 12880658515