18159755455 has 16 divisors (see below), whose sum is σ = 22773668544. Its totient is φ = 13875079680.

The previous prime is 18159755447. The next prime is 18159755483. The reversal of 18159755455 is 55455795181.

It is not a de Polignac number, because 18159755455 - 2³ = 18159755447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18159755396 and 18159755405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43434 + ... + 195463.

It is an arithmetic number, because the mean of its divisors is an integer number (1423354284).

Almost surely, 2^18159755455 is an apocalyptic number.

18159755455 is a deficient number, since it is larger than the sum of its proper divisors (4613913089).

18159755455 is a wasteful number, since it uses less digits than its factorization.

18159755455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239586.

The product of its digits is 6300000, while the sum is 55.

The spelling of 18159755455 in words is "eighteen billion, one hundred fifty-nine million, seven hundred fifty-five thousand, four hundred fifty-five".