513331413173 has 2 divisors, whose sum is σ = 513331413174. Its totient is φ = 513331413172.

The previous prime is 513331413157. The next prime is 513331413227. The reversal of 513331413173 is 371314133315.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351420139249 + 161911273924 = 592807^2 + 402382^2 .

It is a cyclic number.

It is not a de Polignac number, because 513331413173 - 2⁴ = 513331413157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513331413103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256665706586 + 256665706587.

It is an arithmetic number, because the mean of its divisors is an integer number (256665706587).

Almost surely, 2^513331413173 is an apocalyptic number.

It is an amenable number.

513331413173 is a deficient number, since it is larger than the sum of its proper divisors (1).

513331413173 is an equidigital number, since it uses as much as digits as its factorization.

513331413173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 35.

Adding to 513331413173 its reverse (371314133315), we get a palindrome (884645546488).

The spelling of 513331413173 in words is "five hundred thirteen billion, three hundred thirty-one million, four hundred thirteen thousand, one hundred seventy-three".