23636389878 has 24 divisors (see below), whose sum is σ = 51538376448. Its totient is φ = 7828612272.

The previous prime is 23636389873. The next prime is 23636389891. The reversal of 23636389878 is 87898363632.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23636389873) 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, 4179126 + ... + 4184777.

It is an arithmetic number, because the mean of its divisors is an integer number (2147432352).

Almost surely, 2^23636389878 is an apocalyptic number.

23636389878 is an abundant number, since it is smaller than the sum of its proper divisors (27901986570).

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

23636389878 is a wasteful number, since it uses less digits than its factorization.

23636389878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364068 (or 8364065 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The spelling of 23636389878 in words is "twenty-three billion, six hundred thirty-six million, three hundred eighty-nine thousand, eight hundred seventy-eight".