515534374343 has 2 divisors, whose sum is σ = 515534374344. Its totient is φ = 515534374342.

The previous prime is 515534374219. The next prime is 515534374373. The reversal of 515534374343 is 343473435515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515534374343 - 2¹⁸ = 515534112199 is a prime.

It is a super-2 number, since 2×515534374343² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515534374373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257767187171 + 257767187172.

It is an arithmetic number, because the mean of its divisors is an integer number (257767187172).

Almost surely, 2^515534374343 is an apocalyptic number.

515534374343 is a deficient number, since it is larger than the sum of its proper divisors (1).

515534374343 is an equidigital number, since it uses as much as digits as its factorization.

515534374343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 47.

The spelling of 515534374343 in words is "five hundred fifteen billion, five hundred thirty-four million, three hundred seventy-four thousand, three hundred forty-three".