12643046444 has 36 divisors (see below), whose sum is σ = 25752746376. Its totient is φ = 5415266304.

The previous prime is 12643046333. The next prime is 12643046461. The reversal of 12643046444 is 44464034621.

It is a junction number, because it is equal to n+sod(n) for n = 12643046398 and 12643046407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332204 + ... + 368300.

It is an arithmetic number, because the mean of its divisors is an integer number (715354066).

Almost surely, 2^12643046444 is an apocalyptic number.

12643046444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12643046444 is an abundant number, since it is smaller than the sum of its proper divisors (13109699932).

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

12643046444 is a wasteful number, since it uses less digits than its factorization.

12643046444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37902 (or 37893 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 12643046444 in words is "twelve billion, six hundred forty-three million, forty-six thousand, four hundred forty-four".