22091724656639 has 8 divisors (see below), whose sum is σ = 24275976133968. Its totient is φ = 19936791991360.

The previous prime is 22091724656597. The next prime is 22091724656689. The reversal of 22091724656639 is 93665642719022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22091724656639 - 2⁸ = 22091724656383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22091724656689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7329701432 + ... + 7329704445.

It is an arithmetic number, because the mean of its divisors is an integer number (3034497016746).

Almost surely, 2^{22091724656639} is an apocalyptic number.

22091724656639 is a deficient number, since it is larger than the sum of its proper divisors (2184251477329).

22091724656639 is a wasteful number, since it uses less digits than its factorization.

22091724656639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14659406025.

The product of its (nonzero) digits is 58786560, while the sum is 62.

The spelling of 22091724656639 in words is "twenty-two trillion, ninety-one billion, seven hundred twenty-four million, six hundred fifty-six thousand, six hundred thirty-nine".