244573421440 has 64 divisors (see below), whose sum is σ = 584762866560. Its totient is φ = 97816061952.

The previous prime is 244573421371. The next prime is 244573421489. The reversal of 244573421440 is 44124375442.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 244573421393 and 244573421402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5650762 + ... + 5693878.

It is an arithmetic number, because the mean of its divisors is an integer number (9136919790).

Almost surely, 2^244573421440 is an apocalyptic number.

244573421440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244573421440 is an abundant number, since it is smaller than the sum of its proper divisors (340189445120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

244573421440 is an equidigital number, since it uses as much as digits as its factorization.

244573421440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51999 (or 51987 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 40.

Adding to 244573421440 its reverse (44124375442), we get a palindrome (288697796882).

The spelling of 244573421440 in words is "two hundred forty-four billion, five hundred seventy-three million, four hundred twenty-one thousand, four hundred forty".