561255364624 has 10 divisors (see below), whose sum is σ = 1087432268990. Its totient is φ = 280627682304.

The previous prime is 561255364603. The next prime is 561255364639. The reversal of 561255364624 is 426463552165.

It can be written as a sum of positive squares in only one way, i.e., 488366164224 + 72889200400 = 698832^2 + 269980^2 .

It is a super-2 number, since 2×561255364624² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17539230129 + ... + 17539230160.

It is an arithmetic number, because the mean of its divisors is an integer number (108743226899).

Almost surely, 2^561255364624 is an apocalyptic number.

It is an amenable number.

561255364624 is a deficient number, since it is larger than the sum of its proper divisors (526176904366).

561255364624 is a wasteful number, since it uses less digits than its factorization.

561255364624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35078460297 (or 35078460291 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 49.

The spelling of 561255364624 in words is "five hundred sixty-one billion, two hundred fifty-five million, three hundred sixty-four thousand, six hundred twenty-four".