10664662691 has 2 divisors, whose sum is σ = 10664662692. Its totient is φ = 10664662690.

The previous prime is 10664662639. The next prime is 10664662693. The reversal of 10664662691 is 19626646601.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10664662691 is a prime.

It is a super-2 number, since 2×10664662691² (a number of 21 digits) contains 22 as substring.

Together with 10664662693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10664662693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332331345 + 5332331346.

It is an arithmetic number, because the mean of its divisors is an integer number (5332331346).

Almost surely, 2^10664662691 is an apocalyptic number.

10664662691 is a deficient number, since it is larger than the sum of its proper divisors (1).

10664662691 is an equidigital number, since it uses as much as digits as its factorization.

10664662691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 10664662691 in words is "ten billion, six hundred sixty-four million, six hundred sixty-two thousand, six hundred ninety-one".