18270656355 has 32 divisors (see below), whose sum is σ = 34186166784. Its totient is φ = 8158058496.

The previous prime is 18270656353. The next prime is 18270656359. The reversal of 18270656355 is 55365607281.

It is not a de Polignac number, because 18270656355 - 2¹ = 18270656353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18270656353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2018814 + ... + 2027843.

It is an arithmetic number, because the mean of its divisors is an integer number (1068317712).

Almost surely, 2^18270656355 is an apocalyptic number.

18270656355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18270656355 is a deficient number, since it is larger than the sum of its proper divisors (15915510429).

18270656355 is a wasteful number, since it uses less digits than its factorization.

18270656355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046715.

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 18270656355 in words is "eighteen billion, two hundred seventy million, six hundred fifty-six thousand, three hundred fifty-five".