77601290538 has 16 divisors (see below), whose sum is σ = 155562685056. Its totient is φ = 25807079520.

The previous prime is 77601290537. The next prime is 77601290551. The reversal of 77601290538 is 83509210677.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77601290537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15001531 + ... + 15006702.

It is an arithmetic number, because the mean of its divisors is an integer number (9722667816).

Almost surely, 2^77601290538 is an apocalyptic number.

77601290538 is an abundant number, since it is smaller than the sum of its proper divisors (77961394518).

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

77601290538 is a wasteful number, since it uses less digits than its factorization.

77601290538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30008669.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 77601290538 in words is "seventy-seven billion, six hundred one million, two hundred ninety thousand, five hundred thirty-eight".