75665656659 has 8 divisors (see below), whose sum is σ = 101216167360. Its totient is φ = 50279458536.

The previous prime is 75665656603. The next prime is 75665656687. The reversal of 75665656659 is 95665656657.

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

It is not a de Polignac number, because 75665656659 - 2¹⁶ = 75665591123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75665656659.

It is not an unprimeable number, because it can be changed into a prime (75665656699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41077069 + ... + 41078910.

It is an arithmetic number, because the mean of its divisors is an integer number (12652020920).

Almost surely, 2^75665656659 is an apocalyptic number.

75665656659 is a deficient number, since it is larger than the sum of its proper divisors (25550510701).

75665656659 is a wasteful number, since it uses less digits than its factorization.

75665656659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82156289.

The product of its digits is 306180000, while the sum is 66.

The spelling of 75665656659 in words is "seventy-five billion, six hundred sixty-five million, six hundred fifty-six thousand, six hundred fifty-nine".