561776366370272 has 96 divisors (see below), whose sum is σ = 1195990151368320. Its totient is φ = 258736619520000.

The previous prime is 561776366370259. The next prime is 561776366370299. The reversal of 561776366370272 is 272073663677165.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2301023504 + ... + 2301267632.

It is an arithmetic number, because the mean of its divisors is an integer number (12458230743420).

Almost surely, 2^{561776366370272} is an apocalyptic number.

It is an amenable number.

561776366370272 is an abundant number, since it is smaller than the sum of its proper divisors (634213784998048).

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

561776366370272 is a wasteful number, since it uses less digits than its factorization.

561776366370272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334204 (or 334196 counting only the distinct ones).

The product of its (nonzero) digits is 560105280, while the sum is 68.

The spelling of 561776366370272 in words is "five hundred sixty-one trillion, seven hundred seventy-six billion, three hundred sixty-six million, three hundred seventy thousand, two hundred seventy-two".