513980438365 has 8 divisors (see below), whose sum is σ = 616830522840. Its totient is φ = 411148352832.

The previous prime is 513980438353. The next prime is 513980438383. The reversal of 513980438365 is 563834089315.

It can be written as a sum of positive squares in 4 ways, for example, as 167891784516 + 346088653849 = 409746^2 + 588293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 513980438365 - 2²¹ = 513978341213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4436830 + ... + 4551199.

It is an arithmetic number, because the mean of its divisors is an integer number (77103815355).

Almost surely, 2^513980438365 is an apocalyptic number.

It is an amenable number.

513980438365 is a deficient number, since it is larger than the sum of its proper divisors (102850084475).

513980438365 is a wasteful number, since it uses less digits than its factorization.

513980438365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8999471.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 513980438365 in words is "five hundred thirteen billion, nine hundred eighty million, four hundred thirty-eight thousand, three hundred sixty-five".