23187822990 has 32 divisors (see below), whose sum is σ = 57445963776. Its totient is φ = 5983954080.

The previous prime is 23187822967. The next prime is 23187823027. The reversal of 23187822990 is 9922878132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12465642 + ... + 12467501.

It is an arithmetic number, because the mean of its divisors is an integer number (1795186368).

Almost surely, 2^23187822990 is an apocalyptic number.

23187822990 is an abundant number, since it is smaller than the sum of its proper divisors (34258140786).

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

23187822990 is a wasteful number, since it uses less digits than its factorization.

23187822990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24933184.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 23187822990 in words is "twenty-three billion, one hundred eighty-seven million, eight hundred twenty-two thousand, nine hundred ninety".