513370100809 has 2 divisors, whose sum is σ = 513370100810. Its totient is φ = 513370100808.

The previous prime is 513370100797. The next prime is 513370100821. The reversal of 513370100809 is 908001073315.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (513370100797) and next prime (513370100821).

It can be written as a sum of positive squares in only one way, i.e., 460230630409 + 53139470400 = 678403^2 + 230520^2 .

It is a cyclic number.

It is not a de Polignac number, because 513370100809 - 2⁵ = 513370100777 is a prime.

It is not a weakly prime, because it can be changed into another prime (513370100839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256685050404 + 256685050405.

It is an arithmetic number, because the mean of its divisors is an integer number (256685050405).

Almost surely, 2^513370100809 is an apocalyptic number.

It is an amenable number.

513370100809 is a deficient number, since it is larger than the sum of its proper divisors (1).

513370100809 is an equidigital number, since it uses as much as digits as its factorization.

513370100809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The spelling of 513370100809 in words is "five hundred thirteen billion, three hundred seventy million, one hundred thousand, eight hundred nine".