18709988622723 has 6 divisors (see below), whose sum is σ = 27025539121724. Its totient is φ = 12473325748476.

The previous prime is 18709988622667. The next prime is 18709988622733. The reversal of 18709988622723 is 32722688990781.

It is not a de Polignac number, because 18709988622723 - 2⁸ = 18709988622467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18709988622733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1039443812365 + ... + 1039443812382.

Almost surely, 2^{18709988622723} is an apocalyptic number.

18709988622723 is a deficient number, since it is larger than the sum of its proper divisors (8315550499001).

18709988622723 is a wasteful number, since it uses less digits than its factorization.

18709988622723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078887624753 (or 2078887624750 counting only the distinct ones).

The product of its (nonzero) digits is 292626432, while the sum is 72.

The spelling of 18709988622723 in words is "eighteen trillion, seven hundred nine billion, nine hundred eighty-eight million, six hundred twenty-two thousand, seven hundred twenty-three".