561826512256 has 32 divisors (see below), whose sum is σ = 1185102803880. Its totient is φ = 264388945920.

The previous prime is 561826512253. The next prime is 561826512257. The reversal of 561826512256 is 652215628165.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561826512253) 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, 129093990 + ... + 129098341.

Almost surely, 2^561826512256 is an apocalyptic number.

It is an amenable number.

561826512256 is an abundant number, since it is smaller than the sum of its proper divisors (623276291624).

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

561826512256 is a wasteful number, since it uses less digits than its factorization.

561826512256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258192362 (or 258192350 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 49.

The spelling of 561826512256 in words is "five hundred sixty-one billion, eight hundred twenty-six million, five hundred twelve thousand, two hundred fifty-six".