44445442400 has 72 divisors (see below), whose sum is σ = 108680637744. Its totient is φ = 17748979200.

The previous prime is 44445442399. The next prime is 44445442429. The reversal of 44445442400 is 424454444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445085 + ... + 535715.

It is an arithmetic number, because the mean of its divisors is an integer number (1509453302).

Almost surely, 2^44445442400 is an apocalyptic number.

44445442400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44445442400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54340318872).

44445442400 is an abundant number, since it is smaller than the sum of its proper divisors (64235195344).

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

44445442400 is a wasteful number, since it uses less digits than its factorization.

44445442400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91264 (or 91251 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 35.

Adding to 44445442400 its reverse (424454444), we get a palindrome (44869896844).

The spelling of 44445442400 in words is "forty-four billion, four hundred forty-five million, four hundred forty-two thousand, four hundred".