12919918836636 has 96 divisors (see below), whose sum is σ = 40296043200000. Its totient is φ = 3497120884224.

The previous prime is 12919918836523. The next prime is 12919918836653. The reversal of 12919918836636 is 63663881991921.

12919918836636 is a `hidden beast` number, since 12 + 91 + 9 + 91 + 88 + 366 + 3 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449718261 + ... + 449746988.

It is an arithmetic number, because the mean of its divisors is an integer number (419750450000).

Almost surely, 2^{12919918836636} is an apocalyptic number.

It is an amenable number.

12919918836636 is an abundant number, since it is smaller than the sum of its proper divisors (27376124363364).

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

12919918836636 is a wasteful number, since it uses less digits than its factorization.

12919918836636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899465288 (or 899465280 counting only the distinct ones).

The product of its digits is 181398528, while the sum is 72.

The spelling of 12919918836636 in words is "twelve trillion, nine hundred nineteen billion, nine hundred eighteen million, eight hundred thirty-six thousand, six hundred thirty-six".