315216653666441 has 2 divisors, whose sum is σ = 315216653666442. Its totient is φ = 315216653666440.

The previous prime is 315216653666381. The next prime is 315216653666483. The reversal of 315216653666441 is 144666356612513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302147134464400 + 13069519202041 = 17382380^2 + 3615179^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315216653666441 is a prime.

It is not a weakly prime, because it can be changed into another prime (315216653663441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157608326833220 + 157608326833221.

It is an arithmetic number, because the mean of its divisors is an integer number (157608326833221).

Almost surely, 2^{315216653666441} is an apocalyptic number.

It is an amenable number.

315216653666441 is a deficient number, since it is larger than the sum of its proper divisors (1).

315216653666441 is an equidigital number, since it uses as much as digits as its factorization.

315216653666441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55987200, while the sum is 59.

The spelling of 315216653666441 in words is "three hundred fifteen trillion, two hundred sixteen billion, six hundred fifty-three million, six hundred sixty-six thousand, four hundred forty-one".