23656955904 has 192 divisors, whose sum is σ = 70896287280. Its totient is φ = 7882997760.

The previous prime is 23656955891. The next prime is 23656955909. The reversal of 23656955904 is 40955965632.

It is a happy number.

23656955904 is a `hidden beast` number, since 2 + 36 + 56 + 9 + 559 + 0 + 4 = 666.

23656955904 is nontrivially palindromic in base 15.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (23656955909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7961139 + ... + 7964109.

Almost surely, 2^23656955904 is an apocalyptic number.

23656955904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23656955904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35448143640).

23656955904 is an abundant number, since it is smaller than the sum of its proper divisors (47239331376).

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

23656955904 is an frugal number, since it uses more digits than its factorization.

23656955904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016 (or 2976 counting only the distinct ones).

The product of its (nonzero) digits is 8748000, while the sum is 54.

The spelling of 23656955904 in words is "twenty-three billion, six hundred fifty-six million, nine hundred fifty-five thousand, nine hundred four".