561326664446 has 8 divisors (see below), whose sum is σ = 844488484320. Its totient is φ = 279830503008.

The previous prime is 561326664443. The next prime is 561326664497. The reversal of 561326664446 is 644466623165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561326664443) 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, 416413766 + ... + 416415113.

It is an arithmetic number, because the mean of its divisors is an integer number (105561060540).

Almost surely, 2^561326664446 is an apocalyptic number.

561326664446 is a deficient number, since it is larger than the sum of its proper divisors (283161819874).

561326664446 is a wasteful number, since it uses less digits than its factorization.

561326664446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832829218.

The product of its digits is 14929920, while the sum is 53.

The spelling of 561326664446 in words is "five hundred sixty-one billion, three hundred twenty-six million, six hundred sixty-four thousand, four hundred forty-six".