12118881534 has 8 divisors (see below), whose sum is σ = 24237763080. Its totient is φ = 4039627176.

The previous prime is 12118881497. The next prime is 12118881581. The reversal of 12118881534 is 43518881121.

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

12118881534 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009906789 + ... + 1009906800.

It is an arithmetic number, because the mean of its divisors is an integer number (3029720385).

Almost surely, 2^12118881534 is an apocalyptic number.

12118881534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12118881534 is a wasteful number, since it uses less digits than its factorization.

12118881534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019813594.

The product of its digits is 61440, while the sum is 42.

The spelling of 12118881534 in words is "twelve billion, one hundred eighteen million, eight hundred eighty-one thousand, five hundred thirty-four".