21844044812 has 6 divisors (see below), whose sum is σ = 38227078428. Its totient is φ = 10922022404.

The previous prime is 21844044799. The next prime is 21844044823.

21844044812 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2730505598 + ... + 2730505605.

It is an arithmetic number, because the mean of its divisors is an integer number (6371179738).

Almost surely, 2^21844044812 is an apocalyptic number.

It is an amenable number.

21844044812 is a deficient number, since it is larger than the sum of its proper divisors (16383033616).

21844044812 is a wasteful number, since it uses less digits than its factorization.

21844044812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5461011207 (or 5461011205 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 38.

The spelling of 21844044812 in words is "twenty-one billion, eight hundred forty-four million, forty-four thousand, eight hundred twelve".