273049307681 has 2 divisors, whose sum is σ = 273049307682. Its totient is φ = 273049307680.

The previous prime is 273049307659. The next prime is 273049307693. The reversal of 273049307681 is 186703940372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205444627600 + 67604680081 = 453260^2 + 260009^2 .

It is a cyclic number.

It is not a de Polignac number, because 273049307681 - 2²² = 273045113377 is a prime.

It is a super-2 number, since 2×273049307681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (273049307981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136524653840 + 136524653841.

It is an arithmetic number, because the mean of its divisors is an integer number (136524653841).

Almost surely, 2^273049307681 is an apocalyptic number.

It is an amenable number.

273049307681 is a deficient number, since it is larger than the sum of its proper divisors (1).

273049307681 is an equidigital number, since it uses as much as digits as its factorization.

273049307681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 273049307681 in words is "two hundred seventy-three billion, forty-nine million, three hundred seven thousand, six hundred eighty-one".