267427172740249 has 2 divisors, whose sum is σ = 267427172740250. Its totient is φ = 267427172740248.

The previous prime is 267427172740241. The next prime is 267427172740367. The reversal of 267427172740249 is 942047271724762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 255901609455625 + 11525563284624 = 15996925^2 + 3394932^2 .

It is a cyclic number.

It is not a de Polignac number, because 267427172740249 - 2³ = 267427172740241 is a prime.

It is not a weakly prime, because it can be changed into another prime (267427172740241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133713586370124 + 133713586370125.

It is an arithmetic number, because the mean of its divisors is an integer number (133713586370125).

Almost surely, 2^{267427172740249} is an apocalyptic number.

It is an amenable number.

267427172740249 is a deficient number, since it is larger than the sum of its proper divisors (1).

267427172740249 is an equidigital number, since it uses as much as digits as its factorization.

267427172740249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132765696, while the sum is 64.

The spelling of 267427172740249 in words is "two hundred sixty-seven trillion, four hundred twenty-seven billion, one hundred seventy-two million, seven hundred forty thousand, two hundred forty-nine".