315275848561 has 2 divisors, whose sum is σ = 315275848562. Its totient is φ = 315275848560.

The previous prime is 315275848483. The next prime is 315275848631. The reversal of 315275848561 is 165848572513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266421145600 + 48854702961 = 516160^2 + 221031^2 .

It is a cyclic number.

It is not a de Polignac number, because 315275848561 - 2³⁵ = 280916110193 is a prime.

It is not a weakly prime, because it can be changed into another prime (315275842561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157637924280 + 157637924281.

It is an arithmetic number, because the mean of its divisors is an integer number (157637924281).

Almost surely, 2^315275848561 is an apocalyptic number.

It is an amenable number.

315275848561 is a deficient number, since it is larger than the sum of its proper divisors (1).

315275848561 is an equidigital number, since it uses as much as digits as its factorization.

315275848561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064000, while the sum is 55.

The spelling of 315275848561 in words is "three hundred fifteen billion, two hundred seventy-five million, eight hundred forty-eight thousand, five hundred sixty-one".