21920000163590 has 64 divisors (see below), whose sum is σ = 39987208854720. Its totient is φ = 8650620518400.

The previous prime is 21920000163583. The next prime is 21920000163623. The reversal of 21920000163590 is 9536100002912.

It is a congruent number.

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, 328066106 + ... + 328132914.

It is an arithmetic number, because the mean of its divisors is an integer number (624800138355).

Almost surely, 2^{21920000163590} is an apocalyptic number.

21920000163590 is a deficient number, since it is larger than the sum of its proper divisors (18067208691130).

21920000163590 is a wasteful number, since it uses less digits than its factorization.

21920000163590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68057.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 21920000163590 in words is "twenty-one trillion, nine hundred twenty billion, one hundred sixty-three thousand, five hundred ninety".