18858888715873 has 4 divisors (see below), whose sum is σ = 18899620657408. Its totient is φ = 18818156774340.

The previous prime is 18858888715859. The next prime is 18858888715883. The reversal of 18858888715873 is 37851788885881.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18858888715873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18858888715883) 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, 20365970073 + ... + 20365970998.

It is an arithmetic number, because the mean of its divisors is an integer number (4724905164352).

Almost surely, 2^{18858888715873} is an apocalyptic number.

It is an amenable number.

18858888715873 is a deficient number, since it is larger than the sum of its proper divisors (40731941535).

18858888715873 is an equidigital number, since it uses as much as digits as its factorization.

18858888715873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40731941534.

The product of its digits is 7707033600, while the sum is 85.

The spelling of 18858888715873 in words is "eighteen trillion, eight hundred fifty-eight billion, eight hundred eighty-eight million, seven hundred fifteen thousand, eight hundred seventy-three".