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12988556411886 = 23211312116089347
BaseRepresentation
bin1011110100000010001001…
…0010101000001111101110
31200222200201211101000112200
42331000202102220033232
53200301030420140021
643342505504442330
72510251351612626
oct275004222501756
950880654330480
1012988556411886
114158463535660
1215593293193a6
13732a7ab9a6c3
1432c914285886
15177cdebc4126
hexbd0224a83ee

12988556411886 has 48 divisors (see below), whose sum is σ = 31690554075648. Its totient is φ = 3808960822800.

The previous prime is 12988556411879. The next prime is 12988556411893. The reversal of 12988556411886 is 68811465588921.

12988556411886 is a `hidden beast` number, since 1 + 2 + 9 + 8 + 85 + 56 + 411 + 8 + 86 = 666.

It is an interprime number because it is at equal distance from previous prime (12988556411879) and next prime (12988556411893).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1058038536 + ... + 1058050811.

It is an arithmetic number, because the mean of its divisors is an integer number (660219876576).

Almost surely, 212988556411886 is an apocalyptic number.

12988556411886 is an abundant number, since it is smaller than the sum of its proper divisors (18701997663762).

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

12988556411886 is a wasteful number, since it uses less digits than its factorization.

12988556411886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116089397 (or 2116089394 counting only the distinct ones).

The product of its digits is 265420800, while the sum is 72.

The spelling of 12988556411886 in words is "twelve trillion, nine hundred eighty-eight billion, five hundred fifty-six million, four hundred eleven thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 9 11 18 22 31 33 62 66 93 99 186 198 279 341 558 682 1023 2046 3069 6138 2116089347 4232178694 6348268041 12696536082 19044804123 23276982817 38089608246 46553965634 65598769757 69830948451 131197539514 139661896902 196796309271 209492845353 393592618542 418985690706 590388927813 721586467327 1180777855626 1443172934654 2164759401981 4329518803962 6494278205943 12988556411886