12652440651 has 24 divisors (see below), whose sum is σ = 19950141120. Its totient is φ = 7991012232.

The previous prime is 12652440643. The next prime is 12652440763. The reversal of 12652440651 is 15604425621.

12652440651 is a `hidden beast` number, since 126 + 524 + 4 + 0 + 6 + 5 + 1 = 666.

12652440651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12652440651 - 2³ = 12652440643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12652440601) 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 23 ways as a sum of consecutive naturals, for example, 1365585 + ... + 1374818.

It is an arithmetic number, because the mean of its divisors is an integer number (831255880).

Almost surely, 2^12652440651 is an apocalyptic number.

12652440651 is a deficient number, since it is larger than the sum of its proper divisors (7297700469).

12652440651 is an equidigital number, since it uses as much as digits as its factorization.

12652440651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740437 (or 2740425 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 12652440651 in words is "twelve billion, six hundred fifty-two million, four hundred forty thousand, six hundred fifty-one".