22019406090256 has 15 divisors (see below), whose sum is σ = 42662635666653. Its totient is φ = 11009693660160.

The previous prime is 22019406090251. The next prime is 22019406090263. The reversal of 22019406090256 is 65209060491022.

The square root of 22019406090256 is 4692484.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5365171568656 + 16654234521600 = 2316284^2 + 4080960^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22019406090251) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18183376 + ... + 19356496.

Almost surely, 2^{22019406090256} is an apocalyptic number.

22019406090256 is the 4692484-th square number.

It is an amenable number.

22019406090256 is a deficient number, since it is larger than the sum of its proper divisors (20643229576397).

22019406090256 is an frugal number, since it uses more digits than its factorization.

22019406090256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2346250 (or 1173123 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 22019406090256 in words is "twenty-two trillion, nineteen billion, four hundred six million, ninety thousand, two hundred fifty-six".