315516412034251 has 2 divisors, whose sum is σ = 315516412034252. Its totient is φ = 315516412034250.

The previous prime is 315516412034237. The next prime is 315516412034261. The reversal of 315516412034251 is 152430214615513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315516412034251 - 2⁷ = 315516412034123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 315516412034198 and 315516412034207.

It is not a weakly prime, because it can be changed into another prime (315516412034261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157758206017125 + 157758206017126.

It is an arithmetic number, because the mean of its divisors is an integer number (157758206017126).

Almost surely, 2^{315516412034251} is an apocalyptic number.

315516412034251 is a deficient number, since it is larger than the sum of its proper divisors (1).

315516412034251 is an equidigital number, since it uses as much as digits as its factorization.

315516412034251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432000, while the sum is 43.

Adding to 315516412034251 its reverse (152430214615513), we get a palindrome (467946626649764).

The spelling of 315516412034251 in words is "three hundred fifteen trillion, five hundred sixteen billion, four hundred twelve million, thirty-four thousand, two hundred fifty-one".