20228744887504 has 80 divisors (see below), whose sum is σ = 39822553407744. Its totient is φ = 9952531097600.

The previous prime is 20228744887451. The next prime is 20228744887513. The reversal of 20228744887504 is 40578844782202.

It is a congruent number.

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, 1307349912 + ... + 1307365384.

Almost surely, 2^{20228744887504} is an apocalyptic number.

It is an amenable number.

20228744887504 is a deficient number, since it is larger than the sum of its proper divisors (19593808520240).

20228744887504 is a wasteful number, since it uses less digits than its factorization.

20228744887504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17716 (or 17710 counting only the distinct ones).

The product of its (nonzero) digits is 64225280, while the sum is 61.

The spelling of 20228744887504 in words is "twenty trillion, two hundred twenty-eight billion, seven hundred forty-four million, eight hundred eighty-seven thousand, five hundred four".