7664756574667 has 4 divisors (see below), whose sum is σ = 7707103296256. Its totient is φ = 7622409853080.

The previous prime is 7664756574641. The next prime is 7664756574691.

7664756574667 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 a de Polignac number, because none of the positive numbers 2^k-7664756574667 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7664756574593 and 7664756574602.

It is not an unprimeable number, because it can be changed into a prime (7664756574637) 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, 21173360523 + ... + 21173360884.

It is an arithmetic number, because the mean of its divisors is an integer number (1926775824064).

Almost surely, 2^{7664756574667} is an apocalyptic number.

7664756574667 is a deficient number, since it is larger than the sum of its proper divisors (42346721589).

7664756574667 is a wasteful number, since it uses less digits than its factorization.

7664756574667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42346721588.

The product of its digits is 7468070400, while the sum is 76.

The spelling of 7664756574667 in words is "seven trillion, six hundred sixty-four billion, seven hundred fifty-six million, five hundred seventy-four thousand, six hundred sixty-seven".