78272490984 has 64 divisors (see below), whose sum is σ = 206691133440. Its totient is φ = 24661990080.

The previous prime is 78272490893. The next prime is 78272490997. The reversal of 78272490984 is 48909427287.

It is a super-2 number, since 2×78272490984² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191322 + ... + 1255305.

It is an arithmetic number, because the mean of its divisors is an integer number (3229548960).

Almost surely, 2^78272490984 is an apocalyptic number.

It is an amenable number.

78272490984 is an abundant number, since it is smaller than the sum of its proper divisors (128418642456).

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

78272490984 is a wasteful number, since it uses less digits than its factorization.

78272490984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446710 (or 2446706 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 78272490984 in words is "seventy-eight billion, two hundred seventy-two million, four hundred ninety thousand, nine hundred eighty-four".