78931628573028 has 864 divisors, whose sum is σ = 250679490319104. Its totient is φ = 18912503808000.

The previous prime is 78931628573027. The next prime is 78931628573041. The reversal of 78931628573028 is 82037582613987.

78931628573028 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (78931628573027) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 66834570598 + ... + 66834571778.

Almost surely, 2^{78931628573028} 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 78931628573028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125339745159552).

78931628573028 is an abundant number, since it is smaller than the sum of its proper divisors (171747861746076).

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

78931628573028 is a wasteful number, since it uses less digits than its factorization.

78931628573028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 243855360, while the sum is 69.

The spelling of 78931628573028 in words is "seventy-eight trillion, nine hundred thirty-one billion, six hundred twenty-eight million, five hundred seventy-three thousand, twenty-eight".