22401690623 has 4 divisors (see below), whose sum is σ = 24124897608. Its totient is φ = 20678483640.

The previous prime is 22401690601. The next prime is 22401690667. The reversal of 22401690623 is 32609610422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22401690623 - 2²⁸ = 22133255167 is a prime.

It is a super-2 number, since 2×22401690623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22401696623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861603473 + ... + 861603498.

It is an arithmetic number, because the mean of its divisors is an integer number (6031224402).

Almost surely, 2^22401690623 is an apocalyptic number.

22401690623 is a deficient number, since it is larger than the sum of its proper divisors (1723206985).

22401690623 is a wasteful number, since it uses less digits than its factorization.

22401690623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723206984.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 22401690623 in words is "twenty-two billion, four hundred one million, six hundred ninety thousand, six hundred twenty-three".