23502138672 has 80 divisors (see below), whose sum is σ = 61059449088. Its totient is φ = 7789574400.

The previous prime is 23502138643. The next prime is 23502138679. The reversal of 23502138672 is 27683120532.

It is a self number, because there is not a number n which added to its sum of digits gives 23502138672.

It is not an unprimeable number, because it can be changed into a prime (23502138679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8242047 + ... + 8244897.

Almost surely, 2^23502138672 is an apocalyptic number.

It is an amenable number.

23502138672 is an abundant number, since it is smaller than the sum of its proper divisors (37557310416).

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

23502138672 is a wasteful number, since it uses less digits than its factorization.

23502138672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 23502138672 in words is "twenty-three billion, five hundred two million, one hundred thirty-eight thousand, six hundred seventy-two".