77118618630 has 32 divisors (see below), whose sum is σ = 190086976224. Its totient is φ = 20009154816.

The previous prime is 77118618623. The next prime is 77118618719. The reversal of 77118618630 is 3681681177.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 77118618630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34737007 + ... + 34739226.

It is an arithmetic number, because the mean of its divisors is an integer number (5940218007).

Almost surely, 2^77118618630 is an apocalyptic number.

77118618630 is an abundant number, since it is smaller than the sum of its proper divisors (112968357594).

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

77118618630 is a wasteful number, since it uses less digits than its factorization.

77118618630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69476280.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 77118618630 in words is "seventy-seven billion, one hundred eighteen million, six hundred eighteen thousand, six hundred thirty".