515315133400447 has 2 divisors, whose sum is σ = 515315133400448. Its totient is φ = 515315133400446.

The previous prime is 515315133400429. The next prime is 515315133400451. The reversal of 515315133400447 is 744004331513515.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515315133400447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 515315133400397 and 515315133400406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515315133410447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257657566700223 + 257657566700224.

It is an arithmetic number, because the mean of its divisors is an integer number (257657566700224).

Almost surely, 2^{515315133400447} is an apocalyptic number.

515315133400447 is a deficient number, since it is larger than the sum of its proper divisors (1).

515315133400447 is an equidigital number, since it uses as much as digits as its factorization.

515315133400447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 515315133400447 in words is "five hundred fifteen trillion, three hundred fifteen billion, one hundred thirty-three million, four hundred thousand, four hundred forty-seven".