21900167084675 has 24 divisors (see below), whose sum is σ = 29627534325072. Its totient is φ = 15926006592000.

The previous prime is 21900167084617. The next prime is 21900167084707. The reversal of 21900167084675 is 57648076100912.

It is a happy number.

It is not a de Polignac number, because 21900167084675 - 2³⁸ = 21625289177731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21900167084675.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301706 + ... + 6625055.

It is an arithmetic number, because the mean of its divisors is an integer number (1234480596878).

Almost surely, 2^{21900167084675} is an apocalyptic number.

21900167084675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21900167084675 is a deficient number, since it is larger than the sum of its proper divisors (7727367240397).

21900167084675 is a wasteful number, since it uses less digits than its factorization.

21900167084675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938279 (or 6938274 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 21900167084675 in words is "twenty-one trillion, nine hundred billion, one hundred sixty-seven million, eighty-four thousand, six hundred seventy-five".