509343377770319 has 2 divisors, whose sum is σ = 509343377770320. Its totient is φ = 509343377770318.

The previous prime is 509343377770291. The next prime is 509343377770393. The reversal of 509343377770319 is 913077773343905.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509343377770319 is a prime.

It is a super-2 number, since 2×509343377770319² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (509343377770219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254671688885159 + 254671688885160.

It is an arithmetic number, because the mean of its divisors is an integer number (254671688885160).

Almost surely, 2^{509343377770319} is an apocalyptic number.

509343377770319 is a deficient number, since it is larger than the sum of its proper divisors (1).

509343377770319 is an equidigital number, since it uses as much as digits as its factorization.

509343377770319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315059220, while the sum is 68.

The spelling of 509343377770319 in words is "five hundred nine trillion, three hundred forty-three billion, three hundred seventy-seven million, seven hundred seventy thousand, three hundred nineteen".