53562010661 has 2 divisors, whose sum is σ = 53562010662. Its totient is φ = 53562010660.

The previous prime is 53562010577. The next prime is 53562010681. The reversal of 53562010661 is 16601026535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50341448161 + 3220562500 = 224369^2 + 56750^2 .

It is a cyclic number.

It is not a de Polignac number, because 53562010661 - 2²² = 53557816357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53562010681) 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 as a sum of consecutive naturals, namely, 26781005330 + 26781005331.

It is an arithmetic number, because the mean of its divisors is an integer number (26781005331).

Almost surely, 2^53562010661 is an apocalyptic number.

It is an amenable number.

53562010661 is a deficient number, since it is larger than the sum of its proper divisors (1).

53562010661 is an equidigital number, since it uses as much as digits as its factorization.

53562010661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 53562010661 in words is "fifty-three billion, five hundred sixty-two million, ten thousand, six hundred sixty-one".