76666666673 has 2 divisors, whose sum is σ = 76666666674. Its totient is φ = 76666666672.

The previous prime is 76666666597. The next prime is 76666666717. The reversal of 76666666673 is 37666666667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76614364849 + 52301824 = 276793^2 + 7232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76666666673 is a prime.

It is not a weakly prime, because it can be changed into another prime (76666666273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38333333336 + 38333333337.

It is an arithmetic number, because the mean of its divisors is an integer number (38333333337).

Almost surely, 2^76666666673 is an apocalyptic number.

It is an amenable number.

76666666673 is a deficient number, since it is larger than the sum of its proper divisors (1).

76666666673 is an equidigital number, since it uses as much as digits as its factorization.

76666666673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246903552, while the sum is 65.

The spelling of 76666666673 in words is "seventy-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred seventy-three".