77078984016 has 40 divisors (see below), whose sum is σ = 203751428320. Its totient is φ = 25095482496.

The previous prime is 77078983987. The next prime is 77078984023. The reversal of 77078984016 is 61048987077.

It is a happy number.

It is a super-3 number, since 3×77078984016³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18670171 + ... + 18674298.

It is an arithmetic number, because the mean of its divisors is an integer number (5093785708).

Almost surely, 2^77078984016 is an apocalyptic number.

It is an amenable number.

77078984016 is an abundant number, since it is smaller than the sum of its proper divisors (126672444304).

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

77078984016 is a wasteful number, since it uses less digits than its factorization.

77078984016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37344523 (or 37344517 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 57.

The spelling of 77078984016 in words is "seventy-seven billion, seventy-eight million, nine hundred eighty-four thousand, sixteen".