91950028620 has 48 divisors (see below), whose sum is σ = 257518517760. Its totient is φ = 24514442176.

The previous prime is 91950028601. The next prime is 91950028631. The reversal of 91950028620 is 2682005919.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96091 + ... + 439469.

It is an arithmetic number, because the mean of its divisors is an integer number (5364969120).

Almost surely, 2^91950028620 is an apocalyptic number.

It is an amenable number.

91950028620 is an abundant number, since it is smaller than the sum of its proper divisors (165568489140).

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

91950028620 is a wasteful number, since it uses less digits than its factorization.

91950028620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347854 (or 347852 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 91950028620 in words is "ninety-one billion, nine hundred fifty million, twenty-eight thousand, six hundred twenty".