561376297880 has 16 divisors (see below), whose sum is σ = 1263096670320. Its totient is φ = 224550519136.

The previous prime is 561376297849. The next prime is 561376297903. The reversal of 561376297880 is 88792673165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7017203684 + ... + 7017203763.

It is an arithmetic number, because the mean of its divisors is an integer number (78943541895).

Almost surely, 2^561376297880 is an apocalyptic number.

It is an amenable number.

561376297880 is an abundant number, since it is smaller than the sum of its proper divisors (701720372440).

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

561376297880 is a wasteful number, since it uses less digits than its factorization.

561376297880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14034407458 (or 14034407454 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 561376297880 in words is "five hundred sixty-one billion, three hundred seventy-six million, two hundred ninety-seven thousand, eight hundred eighty".