515420115143 has 2 divisors, whose sum is σ = 515420115144. Its totient is φ = 515420115142.

The previous prime is 515420115109. The next prime is 515420115167. The reversal of 515420115143 is 341511024515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 515420115143 - 2²⁴ = 515403337927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (515420105143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257710057571 + 257710057572.

It is an arithmetic number, because the mean of its divisors is an integer number (257710057572).

Almost surely, 2^515420115143 is an apocalyptic number.

515420115143 is a deficient number, since it is larger than the sum of its proper divisors (1).

515420115143 is an equidigital number, since it uses as much as digits as its factorization.

515420115143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 515420115143 its reverse (341511024515), we get a palindrome (856931139658).

The spelling of 515420115143 in words is "five hundred fifteen billion, four hundred twenty million, one hundred fifteen thousand, one hundred forty-three".