18023235255 has 24 divisors (see below), whose sum is σ = 31308076800. Its totient is φ = 9591529920.

The previous prime is 18023235247. The next prime is 18023235271. The reversal of 18023235255 is 55253232081.

18023235255 is a `hidden beast` number, since 1 + 80 + 2 + 323 + 5 + 255 = 666.

It is not a de Polignac number, because 18023235255 - 2³ = 18023235247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 413655 + ... + 455144.

It is an arithmetic number, because the mean of its divisors is an integer number (1304503200).

Almost surely, 2^18023235255 is an apocalyptic number.

18023235255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18023235255 is a deficient number, since it is larger than the sum of its proper divisors (13284841545).

18023235255 is a wasteful number, since it uses less digits than its factorization.

18023235255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869271 (or 869268 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 18023235255 in words is "eighteen billion, twenty-three million, two hundred thirty-five thousand, two hundred fifty-five".