513682671457 has 4 divisors (see below), whose sum is σ = 513684448020. Its totient is φ = 513680894896.

The previous prime is 513682671451. The next prime is 513682671503. The reversal of 513682671457 is 754176286315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 321031027216 + 192651644241 = 566596^2 + 438921^2 .

It is a cyclic number.

It is not a de Polignac number, because 513682671457 - 2²⁷ = 513548453729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513682671398 and 513682671407.

It is not an unprimeable number, because it can be changed into a prime (513682671451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342982 + ... + 1070047.

It is an arithmetic number, because the mean of its divisors is an integer number (128421112005).

Almost surely, 2^513682671457 is an apocalyptic number.

It is an amenable number.

513682671457 is a deficient number, since it is larger than the sum of its proper divisors (1776563).

513682671457 is a wasteful number, since it uses less digits than its factorization.

513682671457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776562.

The product of its digits is 8467200, while the sum is 55.

The spelling of 513682671457 in words is "five hundred thirteen billion, six hundred eighty-two million, six hundred seventy-one thousand, four hundred fifty-seven".