91602620928 has 320 divisors, whose sum is σ = 333727806720. Its totient is φ = 24158601216.

The previous prime is 91602620917. The next prime is 91602620929. The reversal of 91602620928 is 82902620619.

91602620928 is a `hidden beast` number, since 9 + 16 + 0 + 2 + 620 + 9 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (91602620929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1221576 + ... + 1294392.

It is an arithmetic number, because the mean of its divisors is an integer number (1042899396).

Almost surely, 2^91602620928 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 91602620928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166863903360).

91602620928 is an abundant number, since it is smaller than the sum of its proper divisors (242125185792).

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

91602620928 is a wasteful number, since it uses less digits than its factorization.

91602620928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72864 (or 72842 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 91602620928 in words is "ninety-one billion, six hundred two million, six hundred twenty thousand, nine hundred twenty-eight".