18442345055 has 16 divisors (see below), whose sum is σ = 22422749184. Its totient is φ = 14560304160.

The previous prime is 18442345043. The next prime is 18442345073. The reversal of 18442345055 is 55054324481.

It is a de Polignac number, because none of the positive numbers 2^k-18442345055 is a prime.

It is a super-2 number, since 2×18442345055² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 75170 + ... + 206240.

It is an arithmetic number, because the mean of its divisors is an integer number (1401421824).

Almost surely, 2^18442345055 is an apocalyptic number.

18442345055 is a deficient number, since it is larger than the sum of its proper divisors (3980404129).

18442345055 is a wasteful number, since it uses less digits than its factorization.

18442345055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131446.

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 18442345055 in words is "eighteen billion, four hundred forty-two million, three hundred forty-five thousand, fifty-five".