18779578760 has 16 divisors (see below), whose sum is σ = 42254052300. Its totient is φ = 7511831488.

The previous prime is 18779578747. The next prime is 18779578801. The reversal of 18779578760 is 6787597781.

It can be written as a sum of positive squares in 2 ways, for example, as 17486888644 + 1292690116 = 132238^2 + 35954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234744695 + ... + 234744774.

Almost surely, 2^18779578760 is an apocalyptic number.

18779578760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18779578760 is an abundant number, since it is smaller than the sum of its proper divisors (23474473540).

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

18779578760 is a wasteful number, since it uses less digits than its factorization.

18779578760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469489480 (or 469489476 counting only the distinct ones).

The product of its (nonzero) digits is 41489280, while the sum is 65.

The spelling of 18779578760 in words is "eighteen billion, seven hundred seventy-nine million, five hundred seventy-eight thousand, seven hundred sixty".