18688352050501 has 4 divisors (see below), whose sum is σ = 21358116629152. Its totient is φ = 16018587471852.

The previous prime is 18688352050481. The next prime is 18688352050507. The reversal of 18688352050501 is 10505025388681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18688352050501 - 2³⁷ = 18550913097029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18688352050507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334882289315 + ... + 1334882289328.

It is an arithmetic number, because the mean of its divisors is an integer number (5339529157288).

Almost surely, 2^{18688352050501} is an apocalyptic number.

It is an amenable number.

18688352050501 is a deficient number, since it is larger than the sum of its proper divisors (2669764578651).

18688352050501 is an equidigital number, since it uses as much as digits as its factorization.

18688352050501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2669764578650.

The product of its (nonzero) digits is 2304000, while the sum is 52.

The spelling of 18688352050501 in words is "eighteen trillion, six hundred eighty-eight billion, three hundred fifty-two million, fifty thousand, five hundred one".