18877357488 has 80 divisors (see below), whose sum is σ = 54331808256. Its totient is φ = 5598693120.

The previous prime is 18877357483. The next prime is 18877357517. The reversal of 18877357488 is 88475377881.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (18877357483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355531 + ... + 405162.

Almost surely, 2^18877357488 is an apocalyptic number.

It is an amenable number.

18877357488 is an abundant number, since it is smaller than the sum of its proper divisors (35454450768).

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

18877357488 is a wasteful number, since it uses less digits than its factorization.

18877357488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760762 (or 760756 counting only the distinct ones).

The product of its digits is 84295680, while the sum is 66.

The spelling of 18877357488 in words is "eighteen billion, eight hundred seventy-seven million, three hundred fifty-seven thousand, four hundred eighty-eight".