23171656553564 has 24 divisors (see below), whose sum is σ = 40610831951088. Its totient is φ = 11568562600320.

The previous prime is 23171656553543. The next prime is 23171656553569. The reversal of 23171656553564 is 46535565617132.

It is a super-2 number, since 2×23171656553564² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23171656553569) 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, 134101304 + ... + 134273984.

It is an arithmetic number, because the mean of its divisors is an integer number (1692117997962).

Almost surely, 2^{23171656553564} is an apocalyptic number.

It is an amenable number.

23171656553564 is a deficient number, since it is larger than the sum of its proper divisors (17439175397524).

23171656553564 is a wasteful number, since it uses less digits than its factorization.

23171656553564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222485 (or 222483 counting only the distinct ones).

The product of its digits is 68040000, while the sum is 59.

The spelling of 23171656553564 in words is "twenty-three trillion, one hundred seventy-one billion, six hundred fifty-six million, five hundred fifty-three thousand, five hundred sixty-four".