515040521339 has 2 divisors, whose sum is σ = 515040521340. Its totient is φ = 515040521338.

The previous prime is 515040521329. The next prime is 515040521351. The reversal of 515040521339 is 933125040515.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515040521339 is a prime.

It is a super-2 number, since 2×515040521339² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (515040521329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257520260669 + 257520260670.

It is an arithmetic number, because the mean of its divisors is an integer number (257520260670).

Almost surely, 2^515040521339 is an apocalyptic number.

515040521339 is a deficient number, since it is larger than the sum of its proper divisors (1).

515040521339 is an equidigital number, since it uses as much as digits as its factorization.

515040521339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 515040521339 in words is "five hundred fifteen billion, forty million, five hundred twenty-one thousand, three hundred thirty-nine".