117878787612 has 36 divisors (see below), whose sum is σ = 298011755496. Its totient is φ = 39287604960.

The previous prime is 117878787541. The next prime is 117878787613. The reversal of 117878787612 is 216787878711.

117878787612 is a `hidden beast` number, since 1 + 1 + 7 + 8 + 7 + 8 + 7 + 8 + 7 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 117878787612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117878787613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52162 + ... + 488342.

Almost surely, 2^117878787612 is an apocalyptic number.

117878787612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

117878787612 is an abundant number, since it is smaller than the sum of its proper divisors (180132967884).

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

117878787612 is a wasteful number, since it uses less digits than its factorization.

117878787612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443698 (or 443693 counting only the distinct ones).

The product of its digits is 14751744, while the sum is 63.

The spelling of 117878787612 in words is "one hundred seventeen billion, eight hundred seventy-eight million, seven hundred eighty-seven thousand, six hundred twelve".