18885016872003 has 4 divisors (see below), whose sum is σ = 25180022496008. Its totient is φ = 12590011248000.

The previous prime is 18885016871989. The next prime is 18885016872023. The reversal of 18885016872003 is 30027861058881.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18885016872003 - 2⁵ = 18885016871971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18885016872023) 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, 3147502811998 + ... + 3147502812003.

It is an arithmetic number, because the mean of its divisors is an integer number (6295005624002).

Almost surely, 2^{18885016872003} is an apocalyptic number.

18885016872003 is a deficient number, since it is larger than the sum of its proper divisors (6295005624005).

18885016872003 is an equidigital number, since it uses as much as digits as its factorization.

18885016872003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295005624004.

The product of its (nonzero) digits is 5160960, while the sum is 57.

The spelling of 18885016872003 in words is "eighteen trillion, eight hundred eighty-five billion, sixteen million, eight hundred seventy-two thousand, three".