2164644843244 has 48 divisors (see below), whose sum is σ = 4133457861120. Its totient is φ = 985872363840.

The previous prime is 2164644843203. The next prime is 2164644843281. The reversal of 2164644843244 is 4423484464612.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 2164644843191 and 2164644843200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7294107 + ... + 7585069.

It is an arithmetic number, because the mean of its divisors is an integer number (86113705440).

Almost surely, 2^{2164644843244} is an apocalyptic number.

It is an amenable number.

2164644843244 is a deficient number, since it is larger than the sum of its proper divisors (1968813017876).

2164644843244 is a wasteful number, since it uses less digits than its factorization.

2164644843244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292870 (or 292868 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 52.

The spelling of 2164644843244 in words is "two trillion, one hundred sixty-four billion, six hundred forty-four million, eight hundred forty-three thousand, two hundred forty-four".