23636987136 has 864 divisors, whose sum is σ = 89139068928. Its totient is φ = 6091407360.

The previous prime is 23636987111. The next prime is 23636987149. The reversal of 23636987136 is 63178963632.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is a nude number because it is divisible by every one of its digits.

Its product of digits (5878656) is a multiple of the sum of its prime factors (189).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 229485261 + ... + 229485363.

Almost surely, 2^23636987136 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 23636987136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44569534464).

23636987136 is an abundant number, since it is smaller than the sum of its proper divisors (65502081792).

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

23636987136 is a wasteful number, since it uses less digits than its factorization.

23636987136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 163 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 54.

The spelling of 23636987136 in words is "twenty-three billion, six hundred thirty-six million, nine hundred eighty-seven thousand, one hundred thirty-six".