244400403213 has 24 divisors (see below), whose sum is σ = 363165648768. Its totient is φ = 158302900032.

The previous prime is 244400403187. The next prime is 244400403241. The reversal of 244400403213 is 312304004442.

It is a happy number.

244400403213 is a `hidden beast` number, since 2 + 4 + 4 + 40 + 0 + 403 + 213 = 666.

It is not a de Polignac number, because 244400403213 - 2¹⁶ = 244400337677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244400443213) 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, 2050731 + ... + 2166632.

It is an arithmetic number, because the mean of its divisors is an integer number (15131902032).

Almost surely, 2^244400403213 is an apocalyptic number.

It is an amenable number.

244400403213 is a deficient number, since it is larger than the sum of its proper divisors (118765245555).

244400403213 is a wasteful number, since it uses less digits than its factorization.

244400403213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4217553 (or 4217550 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 244400403213 its reverse (312304004442), we get a palindrome (556704407655).

The spelling of 244400403213 in words is "two hundred forty-four billion, four hundred million, four hundred three thousand, two hundred thirteen".