273883391449 has 2 divisors, whose sum is σ = 273883391450. Its totient is φ = 273883391448.

The previous prime is 273883391423. The next prime is 273883391501. The reversal of 273883391449 is 944193388372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178723481049 + 95159910400 = 422757^2 + 308480^2 .

It is a cyclic number.

It is not a de Polignac number, because 273883391449 - 2⁵ = 273883391417 is a prime.

It is a super-2 number, since 2×273883391449² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (273883391149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136941695724 + 136941695725.

It is an arithmetic number, because the mean of its divisors is an integer number (136941695725).

Almost surely, 2^273883391449 is an apocalyptic number.

It is an amenable number.

273883391449 is a deficient number, since it is larger than the sum of its proper divisors (1).

273883391449 is an equidigital number, since it uses as much as digits as its factorization.

273883391449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 61.

The spelling of 273883391449 in words is "two hundred seventy-three billion, eight hundred eighty-three million, three hundred ninety-one thousand, four hundred forty-nine".