7666676766667 has 4 divisors (see below), whose sum is σ = 7745714671576. Its totient is φ = 7587638861760.

The previous prime is 7666676766629. The next prime is 7666676766673.

7666676766667 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7666676766667 - 2²⁷ = 7666542548939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7666616766667) 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, 39518952309 + ... + 39518952502.

It is an arithmetic number, because the mean of its divisors is an integer number (1936428667894).

Almost surely, 2^{7666676766667} is an apocalyptic number.

7666676766667 is a deficient number, since it is larger than the sum of its proper divisors (79037904909).

7666676766667 is an equidigital number, since it uses as much as digits as its factorization.

7666676766667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79037904908.

The product of its digits is 24196548096, while the sum is 82.

The spelling of 7666676766667 in words is "seven trillion, six hundred sixty-six billion, six hundred seventy-six million, seven hundred sixty-six thousand, six hundred sixty-seven".