11667803449 has 2 divisors, whose sum is σ = 11667803450. Its totient is φ = 11667803448.

The previous prime is 11667803393. The next prime is 11667803453. The reversal of 11667803449 is 94430876611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8504528400 + 3163275049 = 92220^2 + 56243^2 .

It is an emirp because it is prime and its reverse (94430876611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11667803449 - 2²⁹ = 11130932537 is a prime.

It is a super-2 number, since 2×11667803449² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11667803489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5833901724 + 5833901725.

It is an arithmetic number, because the mean of its divisors is an integer number (5833901725).

Almost surely, 2^11667803449 is an apocalyptic number.

It is an amenable number.

11667803449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11667803449 is an equidigital number, since it uses as much as digits as its factorization.

11667803449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 11667803449 in words is "eleven billion, six hundred sixty-seven million, eight hundred three thousand, four hundred forty-nine".