18782661696 has 56 divisors (see below), whose sum is σ = 49714672224. Its totient is φ = 6258508800.

The previous prime is 18782661691. The next prime is 18782661697. The reversal of 18782661696 is 69616628781.

It is not an unprimeable number, because it can be changed into a prime (18782661691) 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, 530236 + ... + 564548.

It is an arithmetic number, because the mean of its divisors is an integer number (887762004).

Almost surely, 2^18782661696 is an apocalyptic number.

18782661696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18782661696 is an abundant number, since it is smaller than the sum of its proper divisors (30932010528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18782661696 is a wasteful number, since it uses less digits than its factorization.

18782661696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37179 (or 37169 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 60.

The spelling of 18782661696 in words is "eighteen billion, seven hundred eighty-two million, six hundred sixty-one thousand, six hundred ninety-six".