23516136644 has 144 divisors (see below), whose sum is σ = 56540151360. Its totient is φ = 8412445440.

The previous prime is 23516136641. The next prime is 23516136647. The reversal of 23516136644 is 44663161532.

It is an interprime number because it is at equal distance from previous prime (23516136641) and next prime (23516136647).

It is not an unprimeable number, because it can be changed into a prime (23516136641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5519387 + ... + 5523645.

It is an arithmetic number, because the mean of its divisors is an integer number (392639940).

Almost surely, 2^23516136644 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 23516136644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28270075680).

23516136644 is an abundant number, since it is smaller than the sum of its proper divisors (33024014716).

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

23516136644 is a wasteful number, since it uses less digits than its factorization.

23516136644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498 (or 4489 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

The spelling of 23516136644 in words is "twenty-three billion, five hundred sixteen million, one hundred thirty-six thousand, six hundred forty-four".