12644407482 has 16 divisors (see below), whose sum is σ = 28901502912. Its totient is φ = 3612687840.

The previous prime is 12644407459. The next prime is 12644407493. The reversal of 12644407482 is 28470444621.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 301057321 = 12644407482 / (1 + 2 + 6 + 4 + 4 + 4 + 0 + 7 + 4 + 8 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150528619 + ... + 150528702.

It is an arithmetic number, because the mean of its divisors is an integer number (1806343932).

Almost surely, 2^12644407482 is an apocalyptic number.

12644407482 is an abundant number, since it is smaller than the sum of its proper divisors (16257095430).

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

12644407482 is a wasteful number, since it uses less digits than its factorization.

12644407482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301057333.

The product of its (nonzero) digits is 344064, while the sum is 42.

The spelling of 12644407482 in words is "twelve billion, six hundred forty-four million, four hundred seven thousand, four hundred eighty-two".