561489057173 has 16 divisors (see below), whose sum is σ = 664383565440. Its totient is φ = 468700915200.

The previous prime is 561489057131. The next prime is 561489057197. The reversal of 561489057173 is 371750984165.

It is a happy number.

561489057173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 561489057173 - 2¹² = 561489053077 is a prime.

It is a super-2 number, since 2×561489057173² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561489057113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36609593 + ... + 36624926.

It is an arithmetic number, because the mean of its divisors is an integer number (41523972840).

Almost surely, 2^561489057173 is an apocalyptic number.

It is an amenable number.

561489057173 is a deficient number, since it is larger than the sum of its proper divisors (102894508267).

561489057173 is a wasteful number, since it uses less digits than its factorization.

561489057173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73234588.

The product of its (nonzero) digits is 6350400, while the sum is 56.

The spelling of 561489057173 in words is "five hundred sixty-one billion, four hundred eighty-nine million, fifty-seven thousand, one hundred seventy-three".