78677497692 has 60 divisors (see below), whose sum is σ = 207989591040. Its totient is φ = 25931150784.

The previous prime is 78677497609. The next prime is 78677497699. The reversal of 78677497692 is 29679477687.

78677497692 is a `hidden beast` number, since 7 + 8 + 6 + 77 + 497 + 69 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 78677497692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78677497699) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1335388 + ... + 1393059.

It is an arithmetic number, because the mean of its divisors is an integer number (3466493184).

Almost surely, 2^78677497692 is an apocalyptic number.

It is an amenable number.

78677497692 is an abundant number, since it is smaller than the sum of its proper divisors (129312093348).

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

78677497692 is a wasteful number, since it uses less digits than its factorization.

78677497692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728552 (or 2728541 counting only the distinct ones).

The product of its digits is 448084224, while the sum is 72.

The spelling of 78677497692 in words is "seventy-eight billion, six hundred seventy-seven million, four hundred ninety-seven thousand, six hundred ninety-two".