273785042281 has 2 divisors, whose sum is σ = 273785042282. Its totient is φ = 273785042280.

The previous prime is 273785042249. The next prime is 273785042287. The reversal of 273785042281 is 182240587372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264752440681 + 9032601600 = 514541^2 + 95040^2 .

It is a cyclic number.

It is not a de Polignac number, because 273785042281 - 2⁵ = 273785042249 is a prime.

It is a super-2 number, since 2×273785042281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (273785042287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136892521140 + 136892521141.

It is an arithmetic number, because the mean of its divisors is an integer number (136892521141).

Almost surely, 2^273785042281 is an apocalyptic number.

It is an amenable number.

273785042281 is a deficient number, since it is larger than the sum of its proper divisors (1).

273785042281 is an equidigital number, since it uses as much as digits as its factorization.

273785042281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 273785042281 in words is "two hundred seventy-three billion, seven hundred eighty-five million, forty-two thousand, two hundred eighty-one".