22745458898 has 18 divisors (see below), whose sum is σ = 34874922501. Its totient is φ = 11125850904.

The previous prime is 22745458891. The next prime is 22745458903. The reversal of 22745458898 is 89885454722.

It can be written as a sum of positive squares in 2 ways, for example, as 15972662689 + 6772796209 = 126383^2 + 82297^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106643.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22745458898.

It is not an unprimeable number, because it can be changed into a prime (22745458891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10023308 + ... + 10025576.

Almost surely, 2^22745458898 is an apocalyptic number.

22745458898 is a deficient number, since it is larger than the sum of its proper divisors (12129463603).

22745458898 is an frugal number, since it uses more digits than its factorization.

22745458898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634 (or 2318 counting only the distinct ones).

The product of its digits is 51609600, while the sum is 62.

The spelling of 22745458898 in words is "twenty-two billion, seven hundred forty-five million, four hundred fifty-eight thousand, eight hundred ninety-eight".