12620445644 has 12 divisors (see below), whose sum is σ = 23046031344. Its totient is φ = 6035865264.

The previous prime is 12620445637. The next prime is 12620445653. The reversal of 12620445644 is 44654402621.

It is a junction number, because it is equal to n+sod(n) for n = 12620445598 and 12620445607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68589287 + ... + 68589470.

It is an arithmetic number, because the mean of its divisors is an integer number (1920502612).

Almost surely, 2^12620445644 is an apocalyptic number.

It is an amenable number.

12620445644 is a deficient number, since it is larger than the sum of its proper divisors (10425585700).

12620445644 is a wasteful number, since it uses less digits than its factorization.

12620445644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137178784 (or 137178782 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

The spelling of 12620445644 in words is "twelve billion, six hundred twenty million, four hundred forty-five thousand, six hundred forty-four".