19955800226 has 32 divisors (see below), whose sum is σ = 30747750768. Its totient is φ = 9710346240.

The previous prime is 19955800213. The next prime is 19955800231. The reversal of 19955800226 is 62200855991.

It is a Cunningham number, because it is equal to 141265²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 648975625 + 19306824601 = 25475^2 + 138949^2 .

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, 11758610 + ... + 11760306.

Almost surely, 2^19955800226 is an apocalyptic number.

19955800226 is a deficient number, since it is larger than the sum of its proper divisors (10791950542).

19955800226 is a wasteful number, since it uses less digits than its factorization.

19955800226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 19955800226 in words is "nineteen billion, nine hundred fifty-five million, eight hundred thousand, two hundred twenty-six".