23887871994 has 64 divisors (see below), whose sum is σ = 56225894400. Its totient is φ = 6622959168.

The previous prime is 23887871983. The next prime is 23887872017. The reversal of 23887871994 is 49917878832.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568687 + ... + 609245.

It is an arithmetic number, because the mean of its divisors is an integer number (878529600).

Almost surely, 2^23887871994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23887871994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28112947200).

23887871994 is an abundant number, since it is smaller than the sum of its proper divisors (32338022406).

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

23887871994 is a wasteful number, since it uses less digits than its factorization.

23887871994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40987.

The product of its digits is 48771072, while the sum is 66.

The spelling of 23887871994 in words is "twenty-three billion, eight hundred eighty-seven million, eight hundred seventy-one thousand, nine hundred ninety-four".