315121115516099 has 2 divisors, whose sum is σ = 315121115516100. Its totient is φ = 315121115516098.

The previous prime is 315121115516069. The next prime is 315121115516173. The reversal of 315121115516099 is 990615511121513.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315121115516099 is a prime.

It is a super-2 number, since 2×315121115516099² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (315121115516069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157560557758049 + 157560557758050.

It is an arithmetic number, because the mean of its divisors is an integer number (157560557758050).

Almost surely, 2^{315121115516099} is an apocalyptic number.

315121115516099 is a deficient number, since it is larger than the sum of its proper divisors (1).

315121115516099 is an equidigital number, since it uses as much as digits as its factorization.

315121115516099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 364500, while the sum is 50.

The spelling of 315121115516099 in words is "three hundred fifteen trillion, one hundred twenty-one billion, one hundred fifteen million, five hundred sixteen thousand, ninety-nine".