513254439709 has 12 divisors (see below), whose sum is σ = 565969753440. Its totient is φ = 465094605800.

The previous prime is 513254439703. The next prime is 513254439721. The reversal of 513254439709 is 907934452315.

It is not a de Polignac number, because 513254439709 - 2³ = 513254439701 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 (513254439701) 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, 6781939 + ... + 6857200.

It is an arithmetic number, because the mean of its divisors is an integer number (47164146120).

Almost surely, 2^513254439709 is an apocalyptic number.

It is an amenable number.

513254439709 is a deficient number, since it is larger than the sum of its proper divisors (52715313731).

513254439709 is a wasteful number, since it uses less digits than its factorization.

513254439709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13639472 (or 13639461 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 513254439709 in words is "five hundred thirteen billion, two hundred fifty-four million, four hundred thirty-nine thousand, seven hundred nine".