77479104018 has 64 divisors (see below), whose sum is σ = 169935615360. Its totient is φ = 23440714752.

The previous prime is 77479104013. The next prime is 77479104019. The reversal of 77479104018 is 81040197477.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (77479104013) 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, 2507821 + ... + 2538527.

It is an arithmetic number, because the mean of its divisors is an integer number (2655243990).

Almost surely, 2^77479104018 is an apocalyptic number.

77479104018 is an abundant number, since it is smaller than the sum of its proper divisors (92456511342).

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

77479104018 is a wasteful number, since it uses less digits than its factorization.

77479104018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31611.

The product of its (nonzero) digits is 395136, while the sum is 48.

The spelling of 77479104018 in words is "seventy-seven billion, four hundred seventy-nine million, one hundred four thousand, eighteen".