12140266446 has 128 divisors (see below), whose sum is σ = 33808389120. Its totient is φ = 3137097600.

The previous prime is 12140266417. The next prime is 12140266447. The reversal of 12140266446 is 64466204121.

12140266446 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 0 + 2 + 6 + 644 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12140266446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140266447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 811716 + ... + 826536.

It is an arithmetic number, because the mean of its divisors is an integer number (264128040).

Almost surely, 2^12140266446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12140266446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16904194560).

12140266446 is an abundant number, since it is smaller than the sum of its proper divisors (21668122674).

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

12140266446 is a wasteful number, since it uses less digits than its factorization.

12140266446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15047 (or 15041 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 12140266446 in words is "twelve billion, one hundred forty million, two hundred sixty-six thousand, four hundred forty-six".