21975432110 has 32 divisors (see below), whose sum is σ = 43448002560. Its totient is φ = 7965463968.

The previous prime is 21975432107. The next prime is 21975432187. The reversal of 21975432110 is 1123457912.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509982 + ... + 2518721.

It is an arithmetic number, because the mean of its divisors is an integer number (1357750080).

Almost surely, 2^21975432110 is an apocalyptic number.

21975432110 is a deficient number, since it is larger than the sum of its proper divisors (21472570450).

21975432110 is a wasteful number, since it uses less digits than its factorization.

21975432110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028752.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 21975432110 in words is "twenty-one billion, nine hundred seventy-five million, four hundred thirty-two thousand, one hundred ten".