11666735449 has 2 divisors, whose sum is σ = 11666735450. Its totient is φ = 11666735448.

The previous prime is 11666735417. The next prime is 11666735453. The reversal of 11666735449 is 94453766611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11258695449 + 408040000 = 106107^2 + 20200^2 .

It is a cyclic number.

It is not a de Polignac number, because 11666735449 - 2⁵ = 11666735417 is a prime.

It is a super-2 number, since 2×11666735449² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11666735396 and 11666735405.

It is not a weakly prime, because it can be changed into another prime (11666735459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833367724 + 5833367725.

It is an arithmetic number, because the mean of its divisors is an integer number (5833367725).

Almost surely, 2^11666735449 is an apocalyptic number.

It is an amenable number.

11666735449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11666735449 is an equidigital number, since it uses as much as digits as its factorization.

11666735449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The spelling of 11666735449 in words is "eleven billion, six hundred sixty-six million, seven hundred thirty-five thousand, four hundred forty-nine".