11867381771893 has 8 divisors (see below), whose sum is σ = 12193761939800. Its totient is φ = 11541298452480.

The previous prime is 11867381771881. The next prime is 11867381772067. The reversal of 11867381771893 is 39817718376811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4118273598609 + 7749108173284 = 2029353^2 + 2783722^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11867381771893 - 2²¹ = 11867379674741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11867381771803) 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 in 7 ways as a sum of consecutive naturals, for example, 74131068 + ... + 74290981.

It is an arithmetic number, because the mean of its divisors is an integer number (1524220242475).

Almost surely, 2^{11867381771893} is an apocalyptic number.

It is an amenable number.

11867381771893 is a deficient number, since it is larger than the sum of its proper divisors (326380167907).

11867381771893 is a wasteful number, since it uses less digits than its factorization.

11867381771893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148424247.

The product of its digits is 85349376, while the sum is 70.

The spelling of 11867381771893 in words is "eleven trillion, eight hundred sixty-seven billion, three hundred eighty-one million, seven hundred seventy-one thousand, eight hundred ninety-three".