28140068932140 has 48 divisors (see below), whose sum is σ = 85955119649280. Its totient is φ = 6821834892480.

The previous prime is 28140068932133. The next prime is 28140068932187. The reversal of 28140068932140 is 4123986004182.

It is a self number, because there is not a number n which added to its sum of digits gives 28140068932140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21318233380 + ... + 21318234699.

It is an arithmetic number, because the mean of its divisors is an integer number (1790731659360).

Almost surely, 2^{28140068932140} is an apocalyptic number.

28140068932140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28140068932140 is an abundant number, since it is smaller than the sum of its proper divisors (57815050717140).

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

28140068932140 is a wasteful number, since it uses less digits than its factorization.

28140068932140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42636468102 (or 42636468100 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 28140068932140 in words is "twenty-eight trillion, one hundred forty billion, sixty-eight million, nine hundred thirty-two thousand, one hundred forty".