961593274665 has 12 divisors (see below), whose sum is σ = 1666761676164. Its totient is φ = 512849746464.

The previous prime is 961593274633. The next prime is 961593274673. The reversal of 961593274665 is 566472395169.

961593274665 is a `hidden beast` number, since 9 + 61 + 5 + 93 + 27 + 466 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 136141074729 + 825452199936 = 368973^2 + 908544^2 .

It is not a de Polignac number, because 961593274665 - 2⁵ = 961593274633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10684369674 + ... + 10684369763.

It is an arithmetic number, because the mean of its divisors is an integer number (138896806347).

Almost surely, 2^961593274665 is an apocalyptic number.

It is an amenable number.

961593274665 is a deficient number, since it is larger than the sum of its proper divisors (705168401499).

961593274665 is a wasteful number, since it uses less digits than its factorization.

961593274665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21368739448 (or 21368739445 counting only the distinct ones).

The product of its digits is 73483200, while the sum is 63.

The spelling of 961593274665 in words is "nine hundred sixty-one billion, five hundred ninety-three million, two hundred seventy-four thousand, six hundred sixty-five".