513111207874685 has 12 divisors (see below), whose sum is σ = 716261359564188. Its totient is φ = 351847685399616.

The previous prime is 513111207874651. The next prime is 513111207874687. The reversal of 513111207874685 is 586478702111315.

It can be written as a sum of positive squares in 2 ways, for example, as 89760048775684 + 423351159099001 = 9474178^2 + 20575499^2 .

It is not a de Polignac number, because 513111207874685 - 2¹⁰ = 513111207873661 is a prime.

It is a super-2 number, since 2×513111207874685² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513111207874687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1047165730112 + ... + 1047165730601.

It is an arithmetic number, because the mean of its divisors is an integer number (59688446630349).

Almost surely, 2^{513111207874685} is an apocalyptic number.

It is an amenable number.

513111207874685 is a deficient number, since it is larger than the sum of its proper divisors (203150151689503).

513111207874685 is a wasteful number, since it uses less digits than its factorization.

513111207874685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094331460732 (or 2094331460725 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 59.

The spelling of 513111207874685 in words is "five hundred thirteen trillion, one hundred eleven billion, two hundred seven million, eight hundred seventy-four thousand, six hundred eighty-five".