18477277885 has 8 divisors (see below), whose sum is σ = 24188436576. Its totient is φ = 13438020240.

The previous prime is 18477277873. The next prime is 18477277901. The reversal of 18477277885 is 58877277481.

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

It is not a de Polignac number, because 18477277885 - 2¹⁵ = 18477245117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167975199 + ... + 167975308.

It is an arithmetic number, because the mean of its divisors is an integer number (3023554572).

Almost surely, 2^18477277885 is an apocalyptic number.

It is an amenable number.

18477277885 is a deficient number, since it is larger than the sum of its proper divisors (5711158691).

18477277885 is a wasteful number, since it uses less digits than its factorization.

18477277885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335950523.

The product of its digits is 49172480, while the sum is 64.

The spelling of 18477277885 in words is "eighteen billion, four hundred seventy-seven million, two hundred seventy-seven thousand, eight hundred eighty-five".