515315352137 has 2 divisors, whose sum is σ = 515315352138. Its totient is φ = 515315352136.

The previous prime is 515315352121. The next prime is 515315352157. The reversal of 515315352137 is 731253513515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 465484165696 + 49831186441 = 682264^2 + 223229^2 .

It is a cyclic number.

It is not a de Polignac number, because 515315352137 - 2⁴ = 515315352121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 515315352094 and 515315352103.

It is not a weakly prime, because it can be changed into another prime (515315352157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257657676068 + 257657676069.

It is an arithmetic number, because the mean of its divisors is an integer number (257657676069).

Almost surely, 2^515315352137 is an apocalyptic number.

It is an amenable number.

515315352137 is a deficient number, since it is larger than the sum of its proper divisors (1).

515315352137 is an equidigital number, since it uses as much as digits as its factorization.

515315352137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236250, while the sum is 41.

The spelling of 515315352137 in words is "five hundred fifteen billion, three hundred fifteen million, three hundred fifty-two thousand, one hundred thirty-seven".