961518265972 has 48 divisors (see below), whose sum is σ = 1839980685312. Its totient is φ = 436017466080.

The previous prime is 961518265963. The next prime is 961518266039. The reversal of 961518265972 is 279562815169.

It is a self number, because there is not a number n which added to its sum of digits gives 961518265972.

It is a congruent 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, 99913953 + ... + 99923575.

It is an arithmetic number, because the mean of its divisors is an integer number (38332930944).

Almost surely, 2^961518265972 is an apocalyptic number.

It is an amenable number.

961518265972 is a deficient number, since it is larger than the sum of its proper divisors (878462419340).

961518265972 is a wasteful number, since it uses less digits than its factorization.

961518265972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14788 (or 14786 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 61.

The spelling of 961518265972 in words is "nine hundred sixty-one billion, five hundred eighteen million, two hundred sixty-five thousand, nine hundred seventy-two".