5656615509 has 8 divisors (see below), whose sum is σ = 7542661120. Its totient is φ = 3770823456.

The previous prime is 5656615507. The next prime is 5656615519. The reversal of 5656615509 is 9055166565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5656615509 - 2¹ = 5656615507 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5656615507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3157 + ... + 106410.

It is an arithmetic number, because the mean of its divisors is an integer number (942832640).

Almost surely, 2^5656615509 is an apocalyptic number.

It is an amenable number.

5656615509 is a deficient number, since it is larger than the sum of its proper divisors (1886045611).

5656615509 is a wasteful number, since it uses less digits than its factorization.

5656615509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126779.

The product of its (nonzero) digits is 1215000, while the sum is 48.

The square root of 5656615509 is about 75210.4747292556. The cubic root of 5656615509 is about 1781.7723697471.

The spelling of 5656615509 in words is "five billion, six hundred fifty-six million, six hundred fifteen thousand, five hundred nine".