21107825323 has 32 divisors (see below), whose sum is σ = 23408050176. Its totient is φ = 18914974848.

The previous prime is 21107825317. The next prime is 21107825381. The reversal of 21107825323 is 32352870112.

It is a cyclic number.

It is not a de Polignac number, because 21107825323 - 2²⁵ = 21074270891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21107825393) 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, 19136190 + ... + 19137292.

It is an arithmetic number, because the mean of its divisors is an integer number (731501568).

Almost surely, 2^21107825323 is an apocalyptic number.

21107825323 is a deficient number, since it is larger than the sum of its proper divisors (2300224853).

21107825323 is a wasteful number, since it uses less digits than its factorization.

21107825323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 21107825323 in words is "twenty-one billion, one hundred seven million, eight hundred twenty-five thousand, three hundred twenty-three".