686340507543 has 16 divisors (see below), whose sum is σ = 916041984000. Its totient is φ = 457099886880.

The previous prime is 686340507511. The next prime is 686340507551. The reversal of 686340507543 is 345705043686.

It is not a de Polignac number, because 686340507543 - 2⁵ = 686340507511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686340500543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15028858 + ... + 15074456.

It is an arithmetic number, because the mean of its divisors is an integer number (57252624000).

Almost surely, 2^686340507543 is an apocalyptic number.

686340507543 is a deficient number, since it is larger than the sum of its proper divisors (229701476457).

686340507543 is a wasteful number, since it uses less digits than its factorization.

686340507543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50542.

The product of its (nonzero) digits is 7257600, while the sum is 51.

The spelling of 686340507543 in words is "six hundred eighty-six billion, three hundred forty million, five hundred seven thousand, five hundred forty-three".