79422315978 has 32 divisors (see below), whose sum is σ = 162748051200. Its totient is φ = 25823767040.

The previous prime is 79422315977. The next prime is 79422316003. The reversal of 79422315978 is 87951322497.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (79422315971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513423 + ... + 1565021.

It is an arithmetic number, because the mean of its divisors is an integer number (5085876600).

Almost surely, 2^79422315978 is an apocalyptic number.

79422315978 is an abundant number, since it is smaller than the sum of its proper divisors (83325735222).

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

79422315978 is a wasteful number, since it uses less digits than its factorization.

79422315978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57902.

The product of its digits is 7620480, while the sum is 57.

The spelling of 79422315978 in words is "seventy-nine billion, four hundred twenty-two million, three hundred fifteen thousand, nine hundred seventy-eight".