22027745618 has 6 divisors (see below), whose sum is σ = 33041933271. Its totient is φ = 11013767862.

The previous prime is 22027745603. The next prime is 22027745653. The reversal of 22027745618 is 81654772022.

It can be written as a sum of positive squares in only one way, i.e., 11013872809 + 11013872809 = 104947^2 + 104947^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=104947.

It is a super-2 number, since 2×22027745618² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 157421 + ... + 262367.

Almost surely, 2^22027745618 is an apocalyptic number.

22027745618 is a deficient number, since it is larger than the sum of its proper divisors (11014187653).

22027745618 is an frugal number, since it uses more digits than its factorization.

22027745618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209896 (or 104949 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 22027745618 in words is "twenty-two billion, twenty-seven million, seven hundred forty-five thousand, six hundred eighteen".