315550632303217 has 2 divisors, whose sum is σ = 315550632303218. Its totient is φ = 315550632303216.

The previous prime is 315550632303199. The next prime is 315550632303289. The reversal of 315550632303217 is 712303236055513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195316249362481 + 120234382940736 = 13975559^2 + 10965144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315550632303217 is a prime.

It is not a weakly prime, because it can be changed into another prime (315550632303617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157775316151608 + 157775316151609.

It is an arithmetic number, because the mean of its divisors is an integer number (157775316151609).

Almost surely, 2^{315550632303217} is an apocalyptic number.

It is an amenable number.

315550632303217 is a deficient number, since it is larger than the sum of its proper divisors (1).

315550632303217 is an equidigital number, since it uses as much as digits as its factorization.

315550632303217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1701000, while the sum is 46.

The spelling of 315550632303217 in words is "three hundred fifteen trillion, five hundred fifty billion, six hundred thirty-two million, three hundred three thousand, two hundred seventeen".