23656641036 has 96 divisors (see below), whose sum is σ = 65018849280. Its totient is φ = 6554421504.

The previous prime is 23656641031. The next prime is 23656641061. The reversal of 23656641036 is 63014665632.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (23656641031) 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 31 ways as a sum of consecutive naturals, for example, 402846 + ... + 457818.

It is an arithmetic number, because the mean of its divisors is an integer number (677279680).

Almost surely, 2^23656641036 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 23656641036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32509424640).

23656641036 is an abundant number, since it is smaller than the sum of its proper divisors (41362208244).

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

23656641036 is a wasteful number, since it uses less digits than its factorization.

23656641036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55143 (or 55141 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 23656641036 in words is "twenty-three billion, six hundred fifty-six million, six hundred forty-one thousand, thirty-six".