12932856641 has 6 divisors (see below), whose sum is σ = 13738363590. Its totient is φ = 12172100096.

The previous prime is 12932856619. The next prime is 12932856647. The reversal of 12932856641 is 14665823921.

12932856641 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 3 ways, for example, as 9832705600 + 3100151041 = 99160^2 + 55679^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12932856641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12932856647) 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 5 ways as a sum of consecutive naturals, for example, 22374896 + ... + 22375473.

It is an arithmetic number, because the mean of its divisors is an integer number (2289727265).

Almost surely, 2^12932856641 is an apocalyptic number.

It is an amenable number.

12932856641 is a deficient number, since it is larger than the sum of its proper divisors (805506949).

12932856641 is an equidigital number, since it uses as much as digits as its factorization.

12932856641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44750403 (or 44750386 counting only the distinct ones).

The product of its digits is 622080, while the sum is 47.

The spelling of 12932856641 in words is "twelve billion, nine hundred thirty-two million, eight hundred fifty-six thousand, six hundred forty-one".