961135855900 has 72 divisors (see below), whose sum is σ = 2287183610880. Its totient is φ = 347674008000.

The previous prime is 961135855891. The next prime is 961135855937. The reversal of 961135855900 is 9558531169.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2077230 + ... + 2497429.

It is an arithmetic number, because the mean of its divisors is an integer number (31766439040).

Almost surely, 2^961135855900 is an apocalyptic number.

It is an amenable number.

961135855900 is an abundant number, since it is smaller than the sum of its proper divisors (1326047754980).

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

961135855900 is a wasteful number, since it uses less digits than its factorization.

961135855900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4574875 (or 4574868 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 52.

The spelling of 961135855900 in words is "nine hundred sixty-one billion, one hundred thirty-five million, eight hundred fifty-five thousand, nine hundred".