12751615220 has 12 divisors (see below), whose sum is σ = 26778392004. Its totient is φ = 5100646080.

The previous prime is 12751615199. The next prime is 12751615223. The reversal of 12751615220 is 2251615721.

12751615220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3860633956 + 8890981264 = 62134^2 + 94292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12751615223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 318790361 + ... + 318790400.

It is an arithmetic number, because the mean of its divisors is an integer number (2231532667).

Almost surely, 2^12751615220 is an apocalyptic number.

12751615220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12751615220 is an abundant number, since it is smaller than the sum of its proper divisors (14026776784).

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

12751615220 is a wasteful number, since it uses less digits than its factorization.

12751615220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637580770 (or 637580768 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 12751615220 in words is "twelve billion, seven hundred fifty-one million, six hundred fifteen thousand, two hundred twenty".