117688936968 has 24 divisors (see below), whose sum is σ = 318740871150. Its totient is φ = 39229645632.

The previous prime is 117688936847. The next prime is 117688936973. The reversal of 117688936968 is 869639886711.

It can be written as a sum of positive squares in only one way, i.e., 98557067844 + 19131869124 = 313938^2 + 138318^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 1634568569 = 117688936968 / (1 + 1 + 7 + 6 + 8 + 8 + 9 + 3 + 6 + 9 + 6 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 117688936896 and 117688936905.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 817284213 + ... + 817284356.

Almost surely, 2^117688936968 is an apocalyptic number.

117688936968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

117688936968 is an abundant number, since it is smaller than the sum of its proper divisors (201051934182).

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

117688936968 is a wasteful number, since it uses less digits than its factorization.

117688936968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634568581 (or 1634568574 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 72.

The spelling of 117688936968 in words is "one hundred seventeen billion, six hundred eighty-eight million, nine hundred thirty-six thousand, nine hundred sixty-eight".