21726602045365 has 32 divisors (see below), whose sum is σ = 30014030592000. Its totient is φ = 14789490262848.

The previous prime is 21726602045347. The next prime is 21726602045377. The reversal of 21726602045365 is 56354020662712.

It is not a de Polignac number, because 21726602045365 - 2⁹ = 21726602044853 is a prime.

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, 46564296 + ... + 47028574.

It is an arithmetic number, because the mean of its divisors is an integer number (937938456000).

Almost surely, 2^{21726602045365} is an apocalyptic number.

It is an amenable number.

21726602045365 is a deficient number, since it is larger than the sum of its proper divisors (8287428546635).

21726602045365 is a wasteful number, since it uses less digits than its factorization.

21726602045365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474049.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 21726602045365 in words is "twenty-one trillion, seven hundred twenty-six billion, six hundred two million, forty-five thousand, three hundred sixty-five".