561486746361 has 32 divisors (see below), whose sum is σ = 792443520000. Its totient is φ = 352648790208.

The previous prime is 561486746291. The next prime is 561486746377. The reversal of 561486746361 is 163647684165.

It is not a de Polignac number, because 561486746361 - 2¹⁸ = 561486484217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (561486746461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22435291 + ... + 22460303.

It is an arithmetic number, because the mean of its divisors is an integer number (24763860000).

Almost surely, 2^561486746361 is an apocalyptic number.

It is an amenable number.

561486746361 is a deficient number, since it is larger than the sum of its proper divisors (230956773639).

561486746361 is a wasteful number, since it uses less digits than its factorization.

561486746361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27213.

The product of its digits is 17418240, while the sum is 57.

The spelling of 561486746361 in words is "five hundred sixty-one billion, four hundred eighty-six million, seven hundred forty-six thousand, three hundred sixty-one".