10806661007999 has 16 divisors (see below), whose sum is σ = 11696733590400. Its totient is φ = 9945258514944.

The previous prime is 10806661007993. The next prime is 10806661008001. The reversal of 10806661007999 is 99970016660801.

It is a cyclic number.

It is not a de Polignac number, because 10806661007999 - 2⁴ = 10806661007983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10806661007993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5471984 + ... + 7180245.

It is an arithmetic number, because the mean of its divisors is an integer number (731045849400).

Almost surely, 2^{10806661007999} is an apocalyptic number.

10806661007999 is a deficient number, since it is larger than the sum of its proper divisors (890072582401).

10806661007999 is a wasteful number, since it uses less digits than its factorization.

10806661007999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12653362.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The spelling of 10806661007999 in words is "ten trillion, eight hundred six billion, six hundred sixty-one million, seven thousand, nine hundred ninety-nine".