44121272832 has 640 divisors, whose sum is σ = 163101227520. Its totient is φ = 11609505792.

The previous prime is 44121272803. The next prime is 44121272863. The reversal of 44121272832 is 23827212144.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101896488 + ... + 101896920.

It is an arithmetic number, because the mean of its divisors is an integer number (254845668).

Almost surely, 2^44121272832 is an apocalyptic number.

44121272832 is a gapful number since it is divisible by the number (42) 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 44121272832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81550613760).

44121272832 is an abundant number, since it is smaller than the sum of its proper divisors (118979954688).

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

44121272832 is an frugal number, since it uses more digits than its factorization.

44121272832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 458 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

Adding to 44121272832 its reverse (23827212144), we get a palindrome (67948484976).

The spelling of 44121272832 in words is "forty-four billion, one hundred twenty-one million, two hundred seventy-two thousand, eight hundred thirty-two".