21682685044326 has 16 divisors (see below), whose sum is σ = 43418190281328. Its totient is φ = 7218758316000.

The previous prime is 21682685044313. The next prime is 21682685044351. The reversal of 21682685044326 is 62344058628612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2200836025 + ... + 2200845876.

It is an arithmetic number, because the mean of its divisors is an integer number (2713636892583).

Almost surely, 2^{21682685044326} is an apocalyptic number.

21682685044326 is an abundant number, since it is smaller than the sum of its proper divisors (21735505237002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21682685044326 is a wasteful number, since it uses less digits than its factorization.

21682685044326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401682727.

The product of its (nonzero) digits is 26542080, while the sum is 57.

The spelling of 21682685044326 in words is "twenty-one trillion, six hundred eighty-two billion, six hundred eighty-five million, forty-four thousand, three hundred twenty-six".