76667844876666 has 16 divisors (see below), whose sum is σ = 153335816765184. Its totient is φ = 25555927123584.

The previous prime is 76667844876617. The next prime is 76667844876677. The reversal of 76667844876666 is 66667844876667.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741066 + ... + 12935658.

It is an arithmetic number, because the mean of its divisors is an integer number (9583488547824).

Almost surely, 2^{76667844876666} is an apocalyptic number.

76667844876666 is an abundant number, since it is smaller than the sum of its proper divisors (76667971888518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76667844876666 is a wasteful number, since it uses less digits than its factorization.

76667844876666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10584325.

The product of its digits is 98322481152, while the sum is 87.

Subtracting from 76667844876666 its reverse (66667844876667), we obtain a palindrome (9999999999999).

The spelling of 76667844876666 in words is "seventy-six trillion, six hundred sixty-seven billion, eight hundred forty-four million, eight hundred seventy-six thousand, six hundred sixty-six".