561252747670 has 24 divisors (see below), whose sum is σ = 1073177404704. Its totient is φ = 211295150976.

The previous prime is 561252747661. The next prime is 561252747677. The reversal of 561252747670 is 76747252165.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561252747677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97099662 + ... + 97105441.

It is an arithmetic number, because the mean of its divisors is an integer number (44715725196).

Almost surely, 2^561252747670 is an apocalyptic number.

561252747670 is a deficient number, since it is larger than the sum of its proper divisors (511924657034).

561252747670 is a wasteful number, since it uses less digits than its factorization.

561252747670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194205144 (or 194205127 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 52.

The spelling of 561252747670 in words is "five hundred sixty-one billion, two hundred fifty-two million, seven hundred forty-seven thousand, six hundred seventy".