76666666333 has 4 divisors (see below), whose sum is σ = 77109826428. Its totient is φ = 76223506240.

The previous prime is 76666666303. The next prime is 76666666381. The reversal of 76666666333 is 33366666667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33366666667 = 227 ⋅146989721.

It can be written as a sum of positive squares in 2 ways, for example, as 67323124089 + 9343542244 = 259467^2 + 96662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76666666333 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76666666303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221579788 + ... + 221580133.

It is an arithmetic number, because the mean of its divisors is an integer number (19277456607).

Almost surely, 2^76666666333 is an apocalyptic number.

It is an amenable number.

76666666333 is a deficient number, since it is larger than the sum of its proper divisors (443160095).

76666666333 is a wasteful number, since it uses less digits than its factorization.

76666666333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443160094.

The product of its digits is 52907904, while the sum is 58.

The spelling of 76666666333 in words is "seventy-six billion, six hundred sixty-six million, six hundred sixty-six thousand, three hundred thirty-three".