73918618956 has 144 divisors (see below), whose sum is σ = 240077789280. Its totient is φ = 19495002240.

The previous prime is 73918618909. The next prime is 73918618973. The reversal of 73918618956 is 65981681937.

73918618956 is a `hidden beast` number, since 7 + 3 + 9 + 1 + 8 + 618 + 9 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 73918618893 and 73918618902.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 468435 + ... + 606026.

It is an arithmetic number, because the mean of its divisors is an integer number (1667206870).

Almost surely, 2^73918618956 is an apocalyptic number.

It is an amenable number.

73918618956 is an abundant number, since it is smaller than the sum of its proper divisors (166159170324).

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

73918618956 is a wasteful number, since it uses less digits than its factorization.

73918618956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074501 (or 1074486 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 73918618956 in words is "seventy-three billion, nine hundred eighteen million, six hundred eighteen thousand, nine hundred fifty-six".