12775405640 has 32 divisors (see below), whose sum is σ = 28871311680. Its totient is φ = 5087646912.

The previous prime is 12775405639. The next prime is 12775405663. The reversal of 12775405640 is 4650457721.

12775405640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7 ways as a sum of consecutive naturals, for example, 694412 + ... + 712571.

It is an arithmetic number, because the mean of its divisors is an integer number (902228490).

Almost surely, 2^12775405640 is an apocalyptic number.

12775405640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12775405640 is an abundant number, since it is smaller than the sum of its proper divisors (16095906040).

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

12775405640 is a wasteful number, since it uses less digits than its factorization.

12775405640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407221 (or 1407217 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 12775405640 in words is "twelve billion, seven hundred seventy-five million, four hundred five thousand, six hundred forty".