23655149568 has 156 divisors (see below), whose sum is σ = 71927136840. Its totient is φ = 7469826048.

The previous prime is 23655149543. The next prime is 23655149569. The reversal of 23655149568 is 86594155632.

23655149568 is a `hidden beast` number, since 2 + 3 + 65 + 5 + 14 + 9 + 568 = 666.

It is a super-2 number, since 2×23655149568² (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 (23655149569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 683530 + ... + 717302.

It is an arithmetic number, because the mean of its divisors is an integer number (461071390).

Almost surely, 2^23655149568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23655149568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35963568420).

23655149568 is an abundant number, since it is smaller than the sum of its proper divisors (48271987272).

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

23655149568 is a wasteful number, since it uses less digits than its factorization.

23655149568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33822 (or 33797 counting only the distinct ones).

The product of its digits is 7776000, while the sum is 54.

The spelling of 23655149568 in words is "twenty-three billion, six hundred fifty-five million, one hundred forty-nine thousand, five hundred sixty-eight".