511435231217 has 2 divisors, whose sum is σ = 511435231218. Its totient is φ = 511435231216.

The previous prime is 511435231199. The next prime is 511435231291. The reversal of 511435231217 is 712132534115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490862779456 + 20572451761 = 700616^2 + 143431^2 .

It is a cyclic number.

It is not a de Polignac number, because 511435231217 - 2⁸ = 511435230961 is a prime.

It is not a weakly prime, because it can be changed into another prime (511435231717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255717615608 + 255717615609.

It is an arithmetic number, because the mean of its divisors is an integer number (255717615609).

Almost surely, 2^511435231217 is an apocalyptic number.

It is an amenable number.

511435231217 is a deficient number, since it is larger than the sum of its proper divisors (1).

511435231217 is an equidigital number, since it uses as much as digits as its factorization.

511435231217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 35.

The spelling of 511435231217 in words is "five hundred eleven billion, four hundred thirty-five million, two hundred thirty-one thousand, two hundred seventeen".