5815685609 has 4 divisors (see below), whose sum is σ = 5825395200. Its totient is φ = 5805976020.

The previous prime is 5815685597. The next prime is 5815685627. The reversal of 5815685609 is 9065865185.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5815685609 - 2⁴ = 5815685593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5815685809) 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, 4853897 + ... + 4855094.

It is an arithmetic number, because the mean of its divisors is an integer number (1456348800).

Almost surely, 2^5815685609 is an apocalyptic number.

It is an amenable number.

5815685609 is a deficient number, since it is larger than the sum of its proper divisors (9709591).

5815685609 is an equidigital number, since it uses as much as digits as its factorization.

5815685609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9709590.

The product of its (nonzero) digits is 2592000, while the sum is 53.

The square root of 5815685609 is about 76260.6425949847. The cubic root of 5815685609 is about 1798.3199971945.

The spelling of 5815685609 in words is "five billion, eight hundred fifteen million, six hundred eighty-five thousand, six hundred nine".