22018375457 has 4 divisors (see below), whose sum is σ = 23712096660. Its totient is φ = 20324654256.

The previous prime is 22018375451. The next prime is 22018375513. The reversal of 22018375457 is 75457381022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3336679696 + 18681695761 = 57764^2 + 136681^2 .

It is a cyclic number.

It is not a de Polignac number, because 22018375457 - 2¹⁴ = 22018359073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22018375451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846860582 + ... + 846860607.

It is an arithmetic number, because the mean of its divisors is an integer number (5928024165).

Almost surely, 2^22018375457 is an apocalyptic number.

It is an amenable number.

22018375457 is a deficient number, since it is larger than the sum of its proper divisors (1693721203).

22018375457 is a wasteful number, since it uses less digits than its factorization.

22018375457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693721202.

The product of its (nonzero) digits is 470400, while the sum is 44.

The spelling of 22018375457 in words is "twenty-two billion, eighteen million, three hundred seventy-five thousand, four hundred fifty-seven".