10665656663 has 2 divisors, whose sum is σ = 10665656664. Its totient is φ = 10665656662.

The previous prime is 10665656657. The next prime is 10665656689. The reversal of 10665656663 is 36665656601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10665656663 - 2¹⁶ = 10665591127 is a prime.

It is a super-2 number, since 2×10665656663² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10665656653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332828331 + 5332828332.

It is an arithmetic number, because the mean of its divisors is an integer number (5332828332).

Almost surely, 2^10665656663 is an apocalyptic number.

10665656663 is a deficient number, since it is larger than the sum of its proper divisors (1).

10665656663 is an equidigital number, since it uses as much as digits as its factorization.

10665656663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3499200, while the sum is 50.

The spelling of 10665656663 in words is "ten billion, six hundred sixty-five million, six hundred fifty-six thousand, six hundred sixty-three".