315444636444643 has 2 divisors, whose sum is σ = 315444636444644. Its totient is φ = 315444636444642.

The previous prime is 315444636444631. The next prime is 315444636444649. The reversal of 315444636444643 is 346444636444513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315444636444643 - 2¹⁷ = 315444636313571 is a prime.

It is not a weakly prime, because it can be changed into another prime (315444636444649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157722318222321 + 157722318222322.

It is an arithmetic number, because the mean of its divisors is an integer number (157722318222322).

Almost surely, 2^{315444636444643} is an apocalyptic number.

315444636444643 is a deficient number, since it is larger than the sum of its proper divisors (1).

315444636444643 is an equidigital number, since it uses as much as digits as its factorization.

315444636444643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 477757440, while the sum is 61.

The spelling of 315444636444643 in words is "three hundred fifteen trillion, four hundred forty-four billion, six hundred thirty-six million, four hundred forty-four thousand, six hundred forty-three".