79440451968 has 64 divisors (see below), whose sum is σ = 212308430400. Its totient is φ = 26317675008.

The previous prime is 79440451897. The next prime is 79440451997. The reversal of 79440451968 is 86915404497.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 571998 + ... + 697181.

It is an arithmetic number, because the mean of its divisors is an integer number (3317319225).

Almost surely, 2^79440451968 is an apocalyptic number.

It is an amenable number.

79440451968 is an abundant number, since it is smaller than the sum of its proper divisors (132867978432).

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

79440451968 is a wasteful number, since it uses less digits than its factorization.

79440451968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269359 (or 1269347 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 79440451968 in words is "seventy-nine billion, four hundred forty million, four hundred fifty-one thousand, nine hundred sixty-eight".