561369167280 has 80 divisors (see below), whose sum is σ = 1933604916960. Its totient is φ = 149698444032.

The previous prime is 561369167279. The next prime is 561369167321. The reversal of 561369167280 is 82761963165.

561369167280 is a `hidden beast` number, since 5 + 613 + 6 + 9 + 16 + 7 + 2 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 129944407 + ... + 129948726.

It is an arithmetic number, because the mean of its divisors is an integer number (24170061462).

Almost surely, 2^561369167280 is an apocalyptic number.

It is an amenable number.

561369167280 is an abundant number, since it is smaller than the sum of its proper divisors (1372235749680).

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

561369167280 is a wasteful number, since it uses less digits than its factorization.

561369167280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259893155 (or 259893143 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 561369167280 in words is "five hundred sixty-one billion, three hundred sixty-nine million, one hundred sixty-seven thousand, two hundred eighty".