315445256100449 has 2 divisors, whose sum is σ = 315445256100450. Its totient is φ = 315445256100448.

The previous prime is 315445256100439. The next prime is 315445256100463. The reversal of 315445256100449 is 944001652544513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310701680999824 + 4743575100625 = 17626732^2 + 2177975^2 .

It is a cyclic number.

It is not a de Polignac number, because 315445256100449 - 2²⁰ = 315445255051873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315445256100449.

It is not a weakly prime, because it can be changed into another prime (315445256100439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157722628050224 + 157722628050225.

It is an arithmetic number, because the mean of its divisors is an integer number (157722628050225).

Almost surely, 2^{315445256100449} is an apocalyptic number.

It is an amenable number.

315445256100449 is a deficient number, since it is larger than the sum of its proper divisors (1).

315445256100449 is an equidigital number, since it uses as much as digits as its factorization.

315445256100449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368000, while the sum is 53.

The spelling of 315445256100449 in words is "three hundred fifteen trillion, four hundred forty-five billion, two hundred fifty-six million, one hundred thousand, four hundred forty-nine".