561051050561 has 2 divisors, whose sum is σ = 561051050562. Its totient is φ = 561051050560.

The previous prime is 561051050479. The next prime is 561051050611. The reversal of 561051050561 is 165050150165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545205024400 + 15846026161 = 738380^2 + 125881^2 .

It is a cyclic number.

It is not a de Polignac number, because 561051050561 - 2²² = 561046856257 is a prime.

It is not a weakly prime, because it can be changed into another prime (561051050761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280525525280 + 280525525281.

It is an arithmetic number, because the mean of its divisors is an integer number (280525525281).

Almost surely, 2^561051050561 is an apocalyptic number.

It is an amenable number.

561051050561 is a deficient number, since it is larger than the sum of its proper divisors (1).

561051050561 is an equidigital number, since it uses as much as digits as its factorization.

561051050561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 35.

The spelling of 561051050561 in words is "five hundred sixty-one billion, fifty-one million, fifty thousand, five hundred sixty-one".