12027400640 has 56 divisors (see below), whose sum is σ = 28918387680. Its totient is φ = 4764238848.

The previous prime is 12027400607. The next prime is 12027400643. The reversal of 12027400640 is 4600472021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12027400643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149495 + ... + 215414.

It is an arithmetic number, because the mean of its divisors is an integer number (516399780).

Almost surely, 2^12027400640 is an apocalyptic number.

12027400640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12027400640 is an abundant number, since it is smaller than the sum of its proper divisors (16890987040).

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

12027400640 is a wasteful number, since it uses less digits than its factorization.

12027400640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365029 (or 365019 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 12027400640 its reverse (4600472021), we get a palindrome (16627872661).

The spelling of 12027400640 in words is "twelve billion, twenty-seven million, four hundred thousand, six hundred forty".