5665912509 has 16 divisors (see below), whose sum is σ = 7593910272. Its totient is φ = 3757622448.

The previous prime is 5665912489. The next prime is 5665912517. The reversal of 5665912509 is 9052195665.

It is a de Polignac number, because none of the positive numbers 2^k-5665912509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665912409) 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, 1130002 + ... + 1135004.

It is an arithmetic number, because the mean of its divisors is an integer number (474619392).

Almost surely, 2^5665912509 is an apocalyptic number.

It is an amenable number.

5665912509 is a deficient number, since it is larger than the sum of its proper divisors (1927997763).

5665912509 is a wasteful number, since it uses less digits than its factorization.

5665912509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896.

The product of its (nonzero) digits is 729000, while the sum is 48.

The square root of 5665912509 is about 75272.2559048153. The cubic root of 5665912509 is about 1782.7479867448.

The spelling of 5665912509 in words is "five billion, six hundred sixty-five million, nine hundred twelve thousand, five hundred nine".