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12911051056494 = 2311743183244643
BaseRepresentation
bin1011101111100001011010…
…0111001010010101101110
31200201021200100101000121110
42323320112213022111232
53143013313032301434
643243131024012450
72501535611143443
oct273702647122556
950637610330543
1012911051056494
114128600804a38
1215462b8a61126
1372867883b576
14328c809659ca
15175ca57244e9
hexbbe169ca56e

12911051056494 has 16 divisors (see below), whose sum is σ = 25824301189632. Its totient is φ = 4303317172728.

The previous prime is 12911051056427. The next prime is 12911051056507. The reversal of 12911051056494 is 49465015011921.

It is a congruent number.

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, 91551864 + ... + 91692779.

It is an arithmetic number, because the mean of its divisors is an integer number (1614018824352).

Almost surely, 212911051056494 is an apocalyptic number.

12911051056494 is an abundant number, since it is smaller than the sum of its proper divisors (12913250133138).

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

12911051056494 is a wasteful number, since it uses less digits than its factorization.

12911051056494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183256391.

The product of its (nonzero) digits is 388800, while the sum is 48.

The spelling of 12911051056494 in words is "twelve trillion, nine hundred eleven billion, fifty-one million, fifty-six thousand, four hundred ninety-four".

Divisors: 1 2 3 6 11743 23486 35229 70458 183244643 366489286 549733929 1099467858 2151841842749 4303683685498 6455525528247 12911051056494