23164473634566 has 128 divisors (see below), whose sum is σ = 52300071567360. Its totient is φ = 6776315884800.

The previous prime is 23164473634537. The next prime is 23164473634573. The reversal of 23164473634566 is 66543637446132.

It is a super-2 number, since 2×23164473634566² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1614579405 + ... + 1614593751.

It is an arithmetic number, because the mean of its divisors is an integer number (408594309120).

Almost surely, 2^{23164473634566} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23164473634566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26150035783680).

23164473634566 is an abundant number, since it is smaller than the sum of its proper divisors (29135597932794).

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

23164473634566 is a wasteful number, since it uses less digits than its factorization.

23164473634566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16290.

The product of its digits is 156764160, while the sum is 60.

The spelling of 23164473634566 in words is "twenty-three trillion, one hundred sixty-four billion, four hundred seventy-three million, six hundred thirty-four thousand, five hundred sixty-six".