11666445337 has 4 divisors (see below), whose sum is σ = 11666781540. Its totient is φ = 11666109136.

The previous prime is 11666445331. The next prime is 11666445361. The reversal of 11666445337 is 73354466611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9513856521 + 2152588816 = 97539^2 + 46396^2 .

It is a cyclic number.

It is not a de Polignac number, because 11666445337 - 2¹⁹ = 11665921049 is a prime.

It is a super-2 number, since 2×11666445337² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11666445331) 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, 109162 + ... + 187747.

It is an arithmetic number, because the mean of its divisors is an integer number (2916695385).

Almost surely, 2^11666445337 is an apocalyptic number.

It is an amenable number.

11666445337 is a deficient number, since it is larger than the sum of its proper divisors (336203).

11666445337 is an equidigital number, since it uses as much as digits as its factorization.

11666445337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336202.

The product of its digits is 1088640, while the sum is 46.

The spelling of 11666445337 in words is "eleven billion, six hundred sixty-six million, four hundred forty-five thousand, three hundred thirty-seven".