12765500540 has 48 divisors (see below), whose sum is σ = 29800968960. Its totient is φ = 4561367040.

The previous prime is 12765500537. The next prime is 12765500551. The reversal of 12765500540 is 4500556721.

12765500540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12765500540.

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 15 ways as a sum of consecutive naturals, for example, 783845 + ... + 799964.

It is an arithmetic number, because the mean of its divisors is an integer number (620853520).

Almost surely, 2^12765500540 is an apocalyptic number.

12765500540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12765500540 is an abundant number, since it is smaller than the sum of its proper divisors (17035468420).

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

12765500540 is a wasteful number, since it uses less digits than its factorization.

12765500540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583862 (or 1583860 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 12765500540 in words is "twelve billion, seven hundred sixty-five million, five hundred thousand, five hundred forty".