44209855872 has 768 divisors, whose sum is σ = 163199836800. Its totient is φ = 11179524096.

The previous prime is 44209855871. The next prime is 44209855883. The reversal of 44209855872 is 27855890244.

44209855872 is a `hidden beast` number, since 4 + 420 + 98 + 55 + 87 + 2 = 666.

It is a super-2 number, since 2×44209855872² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44209855871) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 405594954 + ... + 405595062.

Almost surely, 2^44209855872 is an apocalyptic number.

44209855872 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 44209855872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81599918400).

44209855872 is an abundant number, since it is smaller than the sum of its proper divisors (118989980928).

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

44209855872 is a wasteful number, since it uses less digits than its factorization.

44209855872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 44209855872 in words is "forty-four billion, two hundred nine million, eight hundred fifty-five thousand, eight hundred seventy-two".