513452761273 has 2 divisors, whose sum is σ = 513452761274. Its totient is φ = 513452761272.

The previous prime is 513452761267. The next prime is 513452761291. The reversal of 513452761273 is 372167254315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288893350144 + 224559411129 = 537488^2 + 473877^2 .

It is a cyclic number.

It is not a de Polignac number, because 513452761273 - 2⁹ = 513452760761 is a prime.

It is not a weakly prime, because it can be changed into another prime (513452761373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256726380636 + 256726380637.

It is an arithmetic number, because the mean of its divisors is an integer number (256726380637).

Almost surely, 2^513452761273 is an apocalyptic number.

It is an amenable number.

513452761273 is a deficient number, since it is larger than the sum of its proper divisors (1).

513452761273 is an equidigital number, since it uses as much as digits as its factorization.

513452761273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 46.

The spelling of 513452761273 in words is "five hundred thirteen billion, four hundred fifty-two million, seven hundred sixty-one thousand, two hundred seventy-three".