76666590209 has 8 divisors (see below), whose sum is σ = 85415776128. Its totient is φ = 68213986960.

The previous prime is 76666590179. The next prime is 76666590227. The reversal of 76666590209 is 90209566667.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76666590209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76666593209) 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, 74145122 + ... + 74146155.

It is an arithmetic number, because the mean of its divisors is an integer number (10676972016).

Almost surely, 2^76666590209 is an apocalyptic number.

It is an amenable number.

76666590209 is a deficient number, since it is larger than the sum of its proper divisors (8749185919).

76666590209 is a wasteful number, since it uses less digits than its factorization.

76666590209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148291335.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 76666590209 in words is "seventy-six billion, six hundred sixty-six million, five hundred ninety thousand, two hundred nine".