23505031880 has 64 divisors (see below), whose sum is σ = 57720703680. Its totient is φ = 8543353600.

The previous prime is 23505031873. The next prime is 23505031883. The reversal of 23505031880 is 8813050532.

It is a self number, because there is not a number n which added to its sum of digits gives 23505031880.

It is not an unprimeable number, because it can be changed into a prime (23505031883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049762 + ... + 1071918.

It is an arithmetic number, because the mean of its divisors is an integer number (901885995).

Almost surely, 2^23505031880 is an apocalyptic number.

23505031880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23505031880 is an abundant number, since it is smaller than the sum of its proper divisors (34215671800).

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

23505031880 is a wasteful number, since it uses less digits than its factorization.

23505031880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24590 (or 24586 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 23505031880 in words is "twenty-three billion, five hundred five million, thirty-one thousand, eight hundred eighty".