11867842539 has 12 divisors (see below), whose sum is σ = 19591359216. Its totient is φ = 6781624272.

The previous prime is 11867842531. The next prime is 11867842543. The reversal of 11867842539 is 93524876811.

11867842539 is a `hidden beast` number, since 1 + 1 + 8 + 67 + 8 + 42 + 539 = 666.

It is not a de Polignac number, because 11867842539 - 2³ = 11867842531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11867842531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94189164 + ... + 94189289.

It is an arithmetic number, because the mean of its divisors is an integer number (1632613268).

Almost surely, 2^11867842539 is an apocalyptic number.

11867842539 is a deficient number, since it is larger than the sum of its proper divisors (7723516677).

11867842539 is a wasteful number, since it uses less digits than its factorization.

11867842539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188378466 (or 188378463 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 11867842539 in words is "eleven billion, eight hundred sixty-seven million, eight hundred forty-two thousand, five hundred thirty-nine".