2444206613821 has 24 divisors (see below), whose sum is σ = 3003482021280. Its totient is φ = 1977755748192.

The previous prime is 2444206613803. The next prime is 2444206613831. The reversal of 2444206613821 is 1283166024442.

It is a de Polignac number, because none of the positive numbers 2^k-2444206613821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444206613801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4374966 + ... + 4901911.

It is an arithmetic number, because the mean of its divisors is an integer number (125145084220).

Almost surely, 2^{2444206613821} is an apocalyptic number.

It is an amenable number.

2444206613821 is a deficient number, since it is larger than the sum of its proper divisors (559275407459).

2444206613821 is a wasteful number, since it uses less digits than its factorization.

2444206613821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9277193 (or 9277186 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 2444206613821 in words is "two trillion, four hundred forty-four billion, two hundred six million, six hundred thirteen thousand, eight hundred twenty-one".