43871840806272 has 256 divisors, whose sum is σ = 127729673971200. Its totient is φ = 13280222412800.

The previous prime is 43871840806231. The next prime is 43871840806273. The reversal of 43871840806272 is 27260804817834.

It is a happy number.

It is a super-2 number, since 2×43871840806272² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43871840806273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285973747 + ... + 286127117.

It is an arithmetic number, because the mean of its divisors is an integer number (498944038950).

Almost surely, 2^{43871840806272} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43871840806272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63864836985600).

43871840806272 is an abundant number, since it is smaller than the sum of its proper divisors (83857833164928).

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

43871840806272 is a wasteful number, since it uses less digits than its factorization.

43871840806272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154945 (or 154933 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 43871840806272 in words is "forty-three trillion, eight hundred seventy-one billion, eight hundred forty million, eight hundred six thousand, two hundred seventy-two".