23356121166 has 72 divisors (see below), whose sum is σ = 60458041800. Its totient is φ = 6492812256.

The previous prime is 23356121069. The next prime is 23356121183. The reversal of 23356121166 is 66112165332.

23356121166 is a `hidden beast` number, since 2 + 3 + 35 + 612 + 1 + 1 + 6 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23356121166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 325216 + ... + 390483.

It is an arithmetic number, because the mean of its divisors is an integer number (839695025).

Almost surely, 2^23356121166 is an apocalyptic number.

23356121166 is an abundant number, since it is smaller than the sum of its proper divisors (37101920634).

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

23356121166 is a wasteful number, since it uses less digits than its factorization.

23356121166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715758 (or 715748 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

Adding to 23356121166 its reverse (66112165332), we get a palindrome (89468286498).

The spelling of 23356121166 in words is "twenty-three billion, three hundred fifty-six million, one hundred twenty-one thousand, one hundred sixty-six".