18364889350977 has 32 divisors (see below), whose sum is σ = 27932437387008. Its totient is φ = 10632427462656.

The previous prime is 18364889350963. The next prime is 18364889350993. The reversal of 18364889350977 is 77905398846381.

It is not a de Polignac number, because 18364889350977 - 2⁴ = 18364889350961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18364889350957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3873808 + ... + 7192785.

It is an arithmetic number, because the mean of its divisors is an integer number (872888668344).

Almost surely, 2^{18364889350977} is an apocalyptic number.

18364889350977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

18364889350977 is a deficient number, since it is larger than the sum of its proper divisors (9567548036031).

18364889350977 is a wasteful number, since it uses less digits than its factorization.

18364889350977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069129.

The product of its (nonzero) digits is 2194698240, while the sum is 78.

The spelling of 18364889350977 in words is "eighteen trillion, three hundred sixty-four billion, eight hundred eighty-nine million, three hundred fifty thousand, nine hundred seventy-seven".