5656016665 has 16 divisors (see below), whose sum is σ = 7381691856. Its totient is φ = 4135392000.

The previous prime is 5656016659. The next prime is 5656016689. The reversal of 5656016665 is 5666106565.

It can be written as a sum of positive squares in 8 ways, for example, as 128391561 + 5527625104 = 11331^2 + 74348^2 .

It is not a de Polignac number, because 5656016665 - 2²⁷ = 5521798937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424206 + ... + 437335.

It is an arithmetic number, because the mean of its divisors is an integer number (461355741).

Almost surely, 2^5656016665 is an apocalyptic number.

It is an amenable number.

5656016665 is a deficient number, since it is larger than the sum of its proper divisors (1725675191).

5656016665 is a wasteful number, since it uses less digits than its factorization.

5656016665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861660.

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 5656016665 is about 75206.4935028884. The cubic root of 5656016665 is about 1781.7094910789.

The spelling of 5656016665 in words is "five billion, six hundred fifty-six million, sixteen thousand, six hundred sixty-five".