11381971367 has 12 divisors (see below), whose sum is σ = 12451934880. Its totient is φ = 10398106368.

The previous prime is 11381971357. The next prime is 11381971369. The reversal of 11381971367 is 76317918311.

It is a happy number.

It is not a de Polignac number, because 11381971367 - 2²² = 11377777063 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 (11381971369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 330767 + ... + 363552.

It is an arithmetic number, because the mean of its divisors is an integer number (1037661240).

Almost surely, 2^11381971367 is an apocalyptic number.

11381971367 is a deficient number, since it is larger than the sum of its proper divisors (1069963513).

11381971367 is an equidigital number, since it uses as much as digits as its factorization.

11381971367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694442 (or 694429 counting only the distinct ones).

The product of its digits is 190512, while the sum is 47.

The spelling of 11381971367 in words is "eleven billion, three hundred eighty-one million, nine hundred seventy-one thousand, three hundred sixty-seven".