513366631613 has 32 divisors (see below), whose sum is σ = 603428216832. Its totient is φ = 431868571200.

The previous prime is 513366631579. The next prime is 513366631663. The reversal of 513366631613 is 316136663315.

It is a happy number.

It is not a de Polignac number, because 513366631613 - 2²⁴ = 513349854397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513366631663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30398870 + ... + 30415752.

It is an arithmetic number, because the mean of its divisors is an integer number (18857131776).

Almost surely, 2^513366631613 is an apocalyptic number.

It is an amenable number.

513366631613 is a deficient number, since it is larger than the sum of its proper divisors (90061585219).

513366631613 is a wasteful number, since it uses less digits than its factorization.

513366631613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20825.

The product of its digits is 524880, while the sum is 44.

The spelling of 513366631613 in words is "five hundred thirteen billion, three hundred sixty-six million, six hundred thirty-one thousand, six hundred thirteen".