267727696381 has 2 divisors, whose sum is σ = 267727696382. Its totient is φ = 267727696380.

The previous prime is 267727696361. The next prime is 267727696417. The reversal of 267727696381 is 183696727762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223757380900 + 43970315481 = 473030^2 + 209691^2 .

It is a cyclic number.

It is not a de Polignac number, because 267727696381 - 2⁷ = 267727696253 is a prime.

It is a super-2 number, since 2×267727696381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (267727696361) 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, 133863848190 + 133863848191.

It is an arithmetic number, because the mean of its divisors is an integer number (133863848191).

Almost surely, 2^267727696381 is an apocalyptic number.

It is an amenable number.

267727696381 is a deficient number, since it is larger than the sum of its proper divisors (1).

267727696381 is an equidigital number, since it uses as much as digits as its factorization.

267727696381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64012032, while the sum is 64.

The spelling of 267727696381 in words is "two hundred sixty-seven billion, seven hundred twenty-seven million, six hundred ninety-six thousand, three hundred eighty-one".