275666212049 has 2 divisors, whose sum is σ = 275666212050. Its totient is φ = 275666212048.

The previous prime is 275666212039. The next prime is 275666212067. The reversal of 275666212049 is 940212666572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275651250625 + 14961424 = 525025^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 275666212049 - 2²⁴ = 275649434833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 275666211988 and 275666212006.

It is not a weakly prime, because it can be changed into another prime (275666212009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137833106024 + 137833106025.

It is an arithmetic number, because the mean of its divisors is an integer number (137833106025).

Almost surely, 2^275666212049 is an apocalyptic number.

It is an amenable number.

275666212049 is a deficient number, since it is larger than the sum of its proper divisors (1).

275666212049 is an equidigital number, since it uses as much as digits as its factorization.

275666212049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 275666212049 in words is "two hundred seventy-five billion, six hundred sixty-six million, two hundred twelve thousand, forty-nine".