961891162624 has 320 divisors, whose sum is σ = 2301602688000. Its totient is φ = 393058713600.

The previous prime is 961891162567. The next prime is 961891162669. The reversal of 961891162624 is 426261198169.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2142296352 + ... + 2142296800.

It is an arithmetic number, because the mean of its divisors is an integer number (7192508400).

Almost surely, 2^961891162624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 961891162624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150801344000).

961891162624 is an abundant number, since it is smaller than the sum of its proper divisors (1339711525376).

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

961891162624 is a wasteful number, since it uses less digits than its factorization.

961891162624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 799 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 55.

The spelling of 961891162624 in words is "nine hundred sixty-one billion, eight hundred ninety-one million, one hundred sixty-two thousand, six hundred twenty-four".