75665550317 has 8 divisors (see below), whose sum is σ = 86486433216. Its totient is φ = 64847547072.

The previous prime is 75665550263. The next prime is 75665550377. The reversal of 75665550317 is 71305556657.

It is a happy number.

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

It is not a de Polignac number, because 75665550317 - 2¹⁸ = 75665288173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75665550377) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 663308 + ... + 768965.

It is an arithmetic number, because the mean of its divisors is an integer number (10810804152).

Almost surely, 2^75665550317 is an apocalyptic number.

It is an amenable number.

75665550317 is a deficient number, since it is larger than the sum of its proper divisors (10820882899).

75665550317 is a wasteful number, since it uses less digits than its factorization.

75665550317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439827.

The product of its (nonzero) digits is 3307500, while the sum is 50.

The spelling of 75665550317 in words is "seventy-five billion, six hundred sixty-five million, five hundred fifty thousand, three hundred seventeen".