315561636346123 has 2 divisors, whose sum is σ = 315561636346124. Its totient is φ = 315561636346122.

The previous prime is 315561636346067. The next prime is 315561636346129. The reversal of 315561636346123 is 321643636165513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315561636346123 - 2⁹ = 315561636345611 is a prime.

It is a super-2 number, since 2×315561636346123² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315561636346129) 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, 157780818173061 + 157780818173062.

It is an arithmetic number, because the mean of its divisors is an integer number (157780818173062).

Almost surely, 2^{315561636346123} is an apocalyptic number.

315561636346123 is a deficient number, since it is larger than the sum of its proper divisors (1).

315561636346123 is an equidigital number, since it uses as much as digits as its factorization.

315561636346123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20995200, while the sum is 55.

The spelling of 315561636346123 in words is "three hundred fifteen trillion, five hundred sixty-one billion, six hundred thirty-six million, three hundred forty-six thousand, one hundred twenty-three".