44158335648 has 96 divisors (see below), whose sum is σ = 132964392960. Its totient is φ = 12570059520.

The previous prime is 44158335643. The next prime is 44158335649. The reversal of 44158335648 is 84653385144.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 44158335648.

It is not an unprimeable number, because it can be changed into a prime (44158335643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 60873 + ... + 303351.

It is an arithmetic number, because the mean of its divisors is an integer number (1385045760).

Almost surely, 2^44158335648 is an apocalyptic number.

44158335648 is a gapful number since it is divisible by the number (48) 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 44158335648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66482196480).

44158335648 is an abundant number, since it is smaller than the sum of its proper divisors (88806057312).

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

44158335648 is a wasteful number, since it uses less digits than its factorization.

44158335648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242770 (or 242762 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 51.

The spelling of 44158335648 in words is "forty-four billion, one hundred fifty-eight million, three hundred thirty-five thousand, six hundred forty-eight".