315814256647 has 2 divisors, whose sum is σ = 315814256648. Its totient is φ = 315814256646.

The previous prime is 315814256633. The next prime is 315814256713. The reversal of 315814256647 is 746652418513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315814256647 - 2¹⁹ = 315813732359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315814256594 and 315814256603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315814256617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157907128323 + 157907128324.

It is an arithmetic number, because the mean of its divisors is an integer number (157907128324).

Almost surely, 2^315814256647 is an apocalyptic number.

315814256647 is a deficient number, since it is larger than the sum of its proper divisors (1).

315814256647 is an equidigital number, since it uses as much as digits as its factorization.

315814256647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 52.

The spelling of 315814256647 in words is "three hundred fifteen billion, eight hundred fourteen million, two hundred fifty-six thousand, six hundred forty-seven".