11206665121607 has 4 divisors (see below), whose sum is σ = 11292212183736. Its totient is φ = 11121118059480.

The previous prime is 11206665121591. The next prime is 11206665121627. The reversal of 11206665121607 is 70612156660211.

It is a happy number.

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 11206665121607 - 2⁴ = 11206665121591 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 (11206665121627) 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, 42773530868 + ... + 42773531129.

It is an arithmetic number, because the mean of its divisors is an integer number (2823053045934).

Almost surely, 2^{11206665121607} is an apocalyptic number.

11206665121607 is a deficient number, since it is larger than the sum of its proper divisors (85547062129).

11206665121607 is an equidigital number, since it uses as much as digits as its factorization.

11206665121607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85547062128.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 11206665121607 in words is "eleven trillion, two hundred six billion, six hundred sixty-five million, one hundred twenty-one thousand, six hundred seven".