18308577055 has 4 divisors (see below), whose sum is σ = 21970292472. Its totient is φ = 14646861640.

The previous prime is 18308577043. The next prime is 18308577083. The reversal of 18308577055 is 55077580381.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 18308577055 - 2⁷ = 18308576927 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 3 ways as a sum of consecutive naturals, for example, 1830857701 + ... + 1830857710.

It is an arithmetic number, because the mean of its divisors is an integer number (5492573118).

Almost surely, 2^18308577055 is an apocalyptic number.

18308577055 is a deficient number, since it is larger than the sum of its proper divisors (3661715417).

18308577055 is an equidigital number, since it uses as much as digits as its factorization.

18308577055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661715416.

The product of its (nonzero) digits is 1176000, while the sum is 49.

The spelling of 18308577055 in words is "eighteen billion, three hundred eight million, five hundred seventy-seven thousand, fifty-five".