12140735868 has 72 divisors (see below), whose sum is σ = 31890768000. Its totient is φ = 4038640560.

The previous prime is 12140735857. The next prime is 12140735899. The reversal of 12140735868 is 86853704121.

12140735868 is a `hidden beast` number, since 1 + 21 + 40 + 7 + 3 + 586 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 472513 + ... + 497543.

Almost surely, 2^12140735868 is an apocalyptic number.

12140735868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12140735868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15945384000).

12140735868 is an abundant number, since it is smaller than the sum of its proper divisors (19750032132).

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

12140735868 is a wasteful number, since it uses less digits than its factorization.

12140735868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25549 (or 25535 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 12140735868 in words is "twelve billion, one hundred forty million, seven hundred thirty-five thousand, eight hundred sixty-eight".