78554492928 has 416 divisors, whose sum is σ = 246280435200. Its totient is φ = 24693571584.

The previous prime is 78554492927. The next prime is 78554492941. The reversal of 78554492928 is 82929445587.

78554492928 is a `hidden beast` number, since 7 + 8 + 5 + 54 + 492 + 92 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78554492921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 226381651 + ... + 226381997.

Almost surely, 2^78554492928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78554492928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123140217600).

78554492928 is an abundant number, since it is smaller than the sum of its proper divisors (167725942272).

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

78554492928 is a wasteful number, since it uses less digits than its factorization.

78554492928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 464 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 78554492928 in words is "seventy-eight billion, five hundred fifty-four million, four hundred ninety-two thousand, nine hundred twenty-eight".