11867273381 has 2 divisors, whose sum is σ = 11867273382. Its totient is φ = 11867273380.

The previous prime is 11867273371. The next prime is 11867273437. The reversal of 11867273381 is 18337276811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6993976900 + 4873296481 = 83630^2 + 69809^2 .

It is a cyclic number.

It is not a de Polignac number, because 11867273381 - 2¹⁰ = 11867272357 is a prime.

It is a super-2 number, since 2×11867273381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11867273371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5933636690 + 5933636691.

It is an arithmetic number, because the mean of its divisors is an integer number (5933636691).

Almost surely, 2^11867273381 is an apocalyptic number.

It is an amenable number.

11867273381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11867273381 is an equidigital number, since it uses as much as digits as its factorization.

11867273381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 47.

The spelling of 11867273381 in words is "eleven billion, eight hundred sixty-seven million, two hundred seventy-three thousand, three hundred eighty-one".