2563223656 has 16 divisors (see below), whose sum is σ = 5492622240. Its totient is φ = 1098524400.

The previous prime is 2563223653. The next prime is 2563223657. The reversal of 2563223656 is 6563223652.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2563223653) 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, 22885870 + ... + 22885981.

It is an arithmetic number, because the mean of its divisors is an integer number (343288890).

Almost surely, 2^2563223656 is an apocalyptic number.

It is an amenable number.

2563223656 is an abundant number, since it is smaller than the sum of its proper divisors (2929398584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2563223656 is a wasteful number, since it uses less digits than its factorization.

2563223656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45771864 (or 45771860 counting only the distinct ones).

The product of its digits is 388800, while the sum is 40.

The square root of 2563223656 is about 50628.2890882163. The cubic root of 2563223656 is about 1368.5547221368.

The spelling of 2563223656 in words is "two billion, five hundred sixty-three million, two hundred twenty-three thousand, six hundred fifty-six".