520136346165431 has 2 divisors, whose sum is σ = 520136346165432. Its totient is φ = 520136346165430.

The previous prime is 520136346165347. The next prime is 520136346165497. The reversal of 520136346165431 is 134561643631025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520136346165431 - 2²⁶ = 520136279056567 is a prime.

It is a super-2 number, since 2×520136346165431² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 520136346165431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520136346165031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260068173082715 + 260068173082716.

It is an arithmetic number, because the mean of its divisors is an integer number (260068173082716).

Almost surely, 2^{520136346165431} is an apocalyptic number.

520136346165431 is a deficient number, since it is larger than the sum of its proper divisors (1).

520136346165431 is an equidigital number, since it uses as much as digits as its factorization.

520136346165431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 50.

Adding to 520136346165431 its reverse (134561643631025), we get a palindrome (654697989796456).

The spelling of 520136346165431 in words is "five hundred twenty trillion, one hundred thirty-six billion, three hundred forty-six million, one hundred sixty-five thousand, four hundred thirty-one".