10666885823 has 4 divisors (see below), whose sum is σ = 11636602728. Its totient is φ = 9697168920.

The previous prime is 10666885819. The next prime is 10666885843. The reversal of 10666885823 is 32858866601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10666885823 - 2² = 10666885819 is a prime.

It is a super-2 number, since 2×10666885823² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10666885843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484858436 + ... + 484858457.

It is an arithmetic number, because the mean of its divisors is an integer number (2909150682).

Almost surely, 2^10666885823 is an apocalyptic number.

10666885823 is a deficient number, since it is larger than the sum of its proper divisors (969716905).

10666885823 is an equidigital number, since it uses as much as digits as its factorization.

10666885823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969716904.

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 10666885823 in words is "ten billion, six hundred sixty-six million, eight hundred eighty-five thousand, eight hundred twenty-three".