9921500475 has 48 divisors (see below), whose sum is σ = 17662976640. Its totient is φ = 4895756800.

The previous prime is 9921500447. The next prime is 9921500521. The reversal of 9921500475 is 5740051299.

It is not a de Polignac number, because 9921500475 - 2⁵ = 9921500443 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 9280 + ... + 141170.

It is an arithmetic number, because the mean of its divisors is an integer number (367978680).

Almost surely, 2^9921500475 is an apocalyptic number.

9921500475 is a deficient number, since it is larger than the sum of its proper divisors (7741476165).

9921500475 is a wasteful number, since it uses less digits than its factorization.

9921500475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131980 (or 131975 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 9921500475 is about 99606.7290648579. The cubic root of 9921500475 is about 2148.7824709193.

The spelling of 9921500475 in words is "nine billion, nine hundred twenty-one million, five hundred thousand, four hundred seventy-five".