1522623164561 has 2 divisors, whose sum is σ = 1522623164562. Its totient is φ = 1522623164560.

The previous prime is 1522623164501. The next prime is 1522623164627. The reversal of 1522623164561 is 1654613262251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1383023040400 + 139600124161 = 1176020^2 + 373631^2 .

It is a cyclic number.

It is not a de Polignac number, because 1522623164561 - 2³⁰ = 1521549422737 is a prime.

It is not a weakly prime, because it can be changed into another prime (1522623164501) 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, 761311582280 + 761311582281.

It is an arithmetic number, because the mean of its divisors is an integer number (761311582281).

Almost surely, 2^{1522623164561} is an apocalyptic number.

It is an amenable number.

1522623164561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1522623164561 is an equidigital number, since it uses as much as digits as its factorization.

1522623164561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 44.

The spelling of 1522623164561 in words is "one trillion, five hundred twenty-two billion, six hundred twenty-three million, one hundred sixty-four thousand, five hundred sixty-one".