21844196246 has 8 divisors (see below), whose sum is σ = 32787209280. Its totient is φ = 10915126488.

The previous prime is 21844196243. The next prime is 21844196267. The reversal of 21844196246 is 64269144812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21844196246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21844196243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3481901 + ... + 3488168.

It is an arithmetic number, because the mean of its divisors is an integer number (4098401160).

Almost surely, 2^21844196246 is an apocalyptic number.

21844196246 is a deficient number, since it is larger than the sum of its proper divisors (10943013034).

21844196246 is a wasteful number, since it uses less digits than its factorization.

21844196246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971638.

The product of its digits is 663552, while the sum is 47.

The spelling of 21844196246 in words is "twenty-one billion, eight hundred forty-four million, one hundred ninety-six thousand, two hundred forty-six".