978618400732 has 48 divisors (see below), whose sum is σ = 1963821888000. Its totient is φ = 417998153664.

The previous prime is 978618400699. The next prime is 978618400751. The reversal of 978618400732 is 237004816879.

It is a congruent number.

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, 17955819 + ... + 18010237.

It is an arithmetic number, because the mean of its divisors is an integer number (40912956000).

Almost surely, 2^978618400732 is an apocalyptic number.

It is an amenable number.

978618400732 is an abundant number, since it is smaller than the sum of its proper divisors (985203487268).

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

978618400732 is a wasteful number, since it uses less digits than its factorization.

978618400732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56578 (or 56576 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 978618400732 in words is "nine hundred seventy-eight billion, six hundred eighteen million, four hundred thousand, seven hundred thirty-two".