7664690964668 has 6 divisors (see below), whose sum is σ = 13413209188176. Its totient is φ = 3832345482332.

The previous prime is 7664690964617. The next prime is 7664690964719. The reversal of 7664690964668 is 8664690964667.

It is an interprime number because it is at equal distance from previous prime (7664690964617) and next prime (7664690964719).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 958086370580 + ... + 958086370587.

It is an arithmetic number, because the mean of its divisors is an integer number (2235534864696).

Almost surely, 2^{7664690964668} is an apocalyptic number.

It is an amenable number.

7664690964668 is a deficient number, since it is larger than the sum of its proper divisors (5748518223508).

7664690964668 is a wasteful number, since it uses less digits than its factorization.

7664690964668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916172741171 (or 1916172741169 counting only the distinct ones).

The product of its (nonzero) digits is 3386105856, while the sum is 77.

Subtracting 7664690964668 from its reverse (8664690964667), we obtain a palindrome (999999999999).

The spelling of 7664690964668 in words is "seven trillion, six hundred sixty-four billion, six hundred ninety million, nine hundred sixty-four thousand, six hundred sixty-eight".