79450738065 has 24 divisors (see below), whose sum is σ = 141436632168. Its totient is φ = 41228490240.

The previous prime is 79450738057. The next prime is 79450738111. The reversal of 79450738065 is 56083705497.

79450738065 is a `hidden beast` number, since 79 + 4 + 507 + 3 + 8 + 0 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3057647616 + 76393090449 = 55296^2 + 276393^2 .

It is not a de Polignac number, because 79450738065 - 2³ = 79450738057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23857416 + ... + 23860745.

It is an arithmetic number, because the mean of its divisors is an integer number (5893193007).

Almost surely, 2^79450738065 is an apocalyptic number.

It is an amenable number.

79450738065 is a deficient number, since it is larger than the sum of its proper divisors (61985894103).

79450738065 is a wasteful number, since it uses less digits than its factorization.

79450738065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47718209 (or 47718206 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 79450738065 in words is "seventy-nine billion, four hundred fifty million, seven hundred thirty-eight thousand, sixty-five".