18977876323 has 8 divisors (see below), whose sum is σ = 22193397248. Its totient is φ = 15888454344.

The previous prime is 18977876321. The next prime is 18977876363. The reversal of 18977876323 is 32367877981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18977876323 - 2¹ = 18977876321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18977876321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31524411 + ... + 31525012.

It is an arithmetic number, because the mean of its divisors is an integer number (2774174656).

Almost surely, 2^18977876323 is an apocalyptic number.

18977876323 is a deficient number, since it is larger than the sum of its proper divisors (3215520925).

18977876323 is an equidigital number, since it uses as much as digits as its factorization.

18977876323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63049473.

The product of its digits is 21337344, while the sum is 61.

The spelling of 18977876323 in words is "eighteen billion, nine hundred seventy-seven million, eight hundred seventy-six thousand, three hundred twenty-three".