76791870978 has 32 divisors (see below), whose sum is σ = 156517754112. Its totient is φ = 25108512000.

The previous prime is 76791870919. The next prime is 76791870989. The reversal of 76791870978 is 87907819767.

It is a Curzon 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, 1475703 + ... + 1526853.

It is an arithmetic number, because the mean of its divisors is an integer number (4891179816).

Almost surely, 2^76791870978 is an apocalyptic number.

76791870978 is an abundant number, since it is smaller than the sum of its proper divisors (79725883134).

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

76791870978 is a wasteful number, since it uses less digits than its factorization.

76791870978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55930.

The product of its (nonzero) digits is 74680704, while the sum is 69.

The spelling of 76791870978 in words is "seventy-six billion, seven hundred ninety-one million, eight hundred seventy thousand, nine hundred seventy-eight".