11839871142 has 32 divisors (see below), whose sum is σ = 28702719360. Its totient is φ = 3587839560.

The previous prime is 11839871117. The next prime is 11839871149. The reversal of 11839871142 is 24117893811.

It is a happy number.

11839871142 is a `hidden beast` number, since 118 + 398 + 7 + 1 + 142 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11839871149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9965628 + ... + 9966815.

It is an arithmetic number, because the mean of its divisors is an integer number (896959980).

Almost surely, 2^11839871142 is an apocalyptic number.

11839871142 is an abundant number, since it is smaller than the sum of its proper divisors (16862848218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11839871142 is a wasteful number, since it uses less digits than its factorization.

11839871142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19932465 (or 19932459 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The spelling of 11839871142 in words is "eleven billion, eight hundred thirty-nine million, eight hundred seventy-one thousand, one hundred forty-two".