315800436411121 has 2 divisors, whose sum is σ = 315800436411122. Its totient is φ = 315800436411120.

The previous prime is 315800436411067. The next prime is 315800436411127. The reversal of 315800436411121 is 121114634008513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188171562094096 + 127628874317025 = 13717564^2 + 11297295^2 .

It is a cyclic number.

It is not a de Polignac number, because 315800436411121 - 2¹⁹ = 315800435886833 is a prime.

It is not a weakly prime, because it can be changed into another prime (315800436411127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157900218205560 + 157900218205561.

It is an arithmetic number, because the mean of its divisors is an integer number (157900218205561).

Almost surely, 2^{315800436411121} is an apocalyptic number.

It is an amenable number.

315800436411121 is a deficient number, since it is larger than the sum of its proper divisors (1).

315800436411121 is an equidigital number, since it uses as much as digits as its factorization.

315800436411121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 315800436411121 in words is "three hundred fifteen trillion, eight hundred billion, four hundred thirty-six million, four hundred eleven thousand, one hundred twenty-one".