44171808912 has 720 divisors, whose sum is σ = 167228880000. Its totient is φ = 10841402880.

The previous prime is 44171808899. The next prime is 44171808949. The reversal of 44171808912 is 21980817144.

It is a super-2 number, since 2×44171808912² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 113552014 + ... + 113552402.

Almost surely, 2^44171808912 is an apocalyptic number.

44171808912 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 44171808912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83614440000).

44171808912 is an abundant number, since it is smaller than the sum of its proper divisors (123057071088).

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

44171808912 is a wasteful number, since it uses less digits than its factorization.

44171808912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 44171808912 in words is "forty-four billion, one hundred seventy-one million, eight hundred eight thousand, nine hundred twelve".