43085211840 has 672 divisors, whose sum is σ = 174599193600. Its totient is φ = 9641533440.

The previous prime is 43085211809. The next prime is 43085211881. The reversal of 43085211840 is 4811258034.

43085211840 is a `hidden beast` number, since 430 + 8 + 5 + 211 + 8 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 43085211795 and 43085211804.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 21129541 + ... + 21131579.

Almost surely, 2^43085211840 is an apocalyptic number.

43085211840 is a gapful number since it is divisible by the number (40) 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 43085211840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87299596800).

43085211840 is an abundant number, since it is smaller than the sum of its proper divisors (131513981760).

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

43085211840 is a wasteful number, since it uses less digits than its factorization.

43085211840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

Adding to 43085211840 its reverse (4811258034), we get a palindrome (47896469874).

The spelling of 43085211840 in words is "forty-three billion, eighty-five million, two hundred eleven thousand, eight hundred forty".