961598380056 has 16 divisors (see below), whose sum is σ = 2403995950200. Its totient is φ = 320532793344.

The previous prime is 961598380027. The next prime is 961598380069. The reversal of 961598380056 is 650083895169.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20033299561 + ... + 20033299608.

Almost surely, 2^961598380056 is an apocalyptic number.

It is an amenable number.

961598380056 is an abundant number, since it is smaller than the sum of its proper divisors (1442397570144).

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

961598380056 is a wasteful number, since it uses less digits than its factorization.

961598380056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40066599178 (or 40066599174 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 60.

The spelling of 961598380056 in words is "nine hundred sixty-one billion, five hundred ninety-eight million, three hundred eighty thousand, fifty-six".