7664612164667 has 4 divisors (see below), whose sum is σ = 7664619754176. Its totient is φ = 7664604575160.

The previous prime is 7664612164619. The next prime is 7664612164723.

7664612164667 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7664612164667 - 2⁶ = 7664612164603 is a prime.

It is a super-2 number, since 2×7664612164667² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664612464667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995563 + ... + 4394484.

It is an arithmetic number, because the mean of its divisors is an integer number (1916154938544).

Almost surely, 2^{7664612164667} is an apocalyptic number.

7664612164667 is a deficient number, since it is larger than the sum of its proper divisors (7589509).

7664612164667 is a wasteful number, since it uses less digits than its factorization.

7664612164667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7589508.

The product of its digits is 73156608, while the sum is 62.

The spelling of 7664612164667 in words is "seven trillion, six hundred sixty-four billion, six hundred twelve million, one hundred sixty-four thousand, six hundred sixty-seven".