561715210061 has 2 divisors, whose sum is σ = 561715210062. Its totient is φ = 561715210060.

The previous prime is 561715209983. The next prime is 561715210109. The reversal of 561715210061 is 160012517165.

561715210061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386672548900 + 175042661161 = 621830^2 + 418381^2 .

It is a cyclic number.

It is not a de Polignac number, because 561715210061 - 2¹⁰ = 561715209037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (561715212061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280857605030 + 280857605031.

It is an arithmetic number, because the mean of its divisors is an integer number (280857605031).

Almost surely, 2^561715210061 is an apocalyptic number.

It is an amenable number.

561715210061 is a deficient number, since it is larger than the sum of its proper divisors (1).

561715210061 is an equidigital number, since it uses as much as digits as its factorization.

561715210061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 561715210061 in words is "five hundred sixty-one billion, seven hundred fifteen million, two hundred ten thousand, sixty-one".