7666659090767 has 2 divisors, whose sum is σ = 7666659090768. Its totient is φ = 7666659090766.

The previous prime is 7666659090749. The next prime is 7666659090773. The reversal of 7666659090767 is 7670909566667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7666659090767 - 2⁶ = 7666659090703 is a prime.

It is a super-2 number, since 2×7666659090767² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7666659090694 and 7666659090703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7666659090707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833329545383 + 3833329545384.

It is an arithmetic number, because the mean of its divisors is an integer number (3833329545384).

Almost surely, 2^{7666659090767} is an apocalyptic number.

7666659090767 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666659090767 is an equidigital number, since it uses as much as digits as its factorization.

7666659090767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080203040, while the sum is 74.

The spelling of 7666659090767 in words is "seven trillion, six hundred sixty-six billion, six hundred fifty-nine million, ninety thousand, seven hundred sixty-seven".