961511863996 has 12 divisors (see below), whose sum is σ = 1755804273552. Its totient is φ = 459853500128.

The previous prime is 961511863943. The next prime is 961511864057. The reversal of 961511863996 is 699368115169.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5225607865 + ... + 5225608048.

It is an arithmetic number, because the mean of its divisors is an integer number (146317022796).

Almost surely, 2^961511863996 is an apocalyptic number.

It is an amenable number.

961511863996 is a deficient number, since it is larger than the sum of its proper divisors (794292409556).

961511863996 is a wasteful number, since it uses less digits than its factorization.

961511863996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10451215940 (or 10451215938 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 64.

The spelling of 961511863996 in words is "nine hundred sixty-one billion, five hundred eleven million, eight hundred sixty-three thousand, nine hundred ninety-six".