12140636454 has 128 divisors (see below), whose sum is σ = 29417472000. Its totient is φ = 3697293600.

The previous prime is 12140636437. The next prime is 12140636537. The reversal of 12140636454 is 45463604121.

12140636454 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 0 + 6 + 3 + 645 + 4 = 666.

12140636454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13326259 + ... + 13327169.

It is an arithmetic number, because the mean of its divisors is an integer number (229824000).

Almost surely, 2^12140636454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12140636454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14708736000).

12140636454 is an abundant number, since it is smaller than the sum of its proper divisors (17276835546).

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

12140636454 is a wasteful number, since it uses less digits than its factorization.

12140636454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 12140636454 in words is "twelve billion, one hundred forty million, six hundred thirty-six thousand, four hundred fifty-four".