117981349236 has 18 divisors (see below), whose sum is σ = 298230632882. Its totient is φ = 39327116400.

The previous prime is 117981349177. The next prime is 117981349249. The reversal of 117981349236 is 632943189711.

117981349236 is a `hidden beast` number, since 1 + 1 + 79 + 81 + 3 + 492 + 3 + 6 = 666.

117981349236 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 87231622500 + 30749726736 = 295350^2 + 175356^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1638629815 + ... + 1638629886.

Almost surely, 2^117981349236 is an apocalyptic number.

It is an amenable number.

117981349236 is an abundant number, since it is smaller than the sum of its proper divisors (180249283646).

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

117981349236 is a wasteful number, since it uses less digits than its factorization.

117981349236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277259711 (or 3277259706 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

It can be divided in two parts, 11798134 and 9236, that added together give a triangular number (11807370 = T₄₈₅₉).

The spelling of 117981349236 in words is "one hundred seventeen billion, nine hundred eighty-one million, three hundred forty-nine thousand, two hundred thirty-six".