23193688645 has 24 divisors (see below), whose sum is σ = 29514088800. Its totient is φ = 17494777440.

The previous prime is 23193688571. The next prime is 23193688649. The reversal of 23193688645 is 54688639132.

It is not a de Polignac number, because 23193688645 - 2²³ = 23185300037 is a prime.

It is a super-2 number, since 2×23193688645² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23193688649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350406 + ... + 411304.

It is an arithmetic number, because the mean of its divisors is an integer number (1229753700).

Almost surely, 2^23193688645 is an apocalyptic number.

It is an amenable number.

23193688645 is a deficient number, since it is larger than the sum of its proper divisors (6320400155).

23193688645 is a wasteful number, since it uses less digits than its factorization.

23193688645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61153 (or 61134 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 55.

The spelling of 23193688645 in words is "twenty-three billion, one hundred ninety-three million, six hundred eighty-eight thousand, six hundred forty-five".