43385332481 has 8 divisors (see below), whose sum is σ = 44601685128. Its totient is φ = 42176512000.

The previous prime is 43385332453. The next prime is 43385332531. The reversal of 43385332481 is 18423358334.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4898740081 + 38486592400 = 69991^2 + 196180^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43385332481 is a prime.

It is a super-2 number, since 2×43385332481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43385337481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871360 + ... + 1894401.

It is an arithmetic number, because the mean of its divisors is an integer number (5575210641).

Almost surely, 2^43385332481 is an apocalyptic number.

43385332481 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

43385332481 is a deficient number, since it is larger than the sum of its proper divisors (1216352647).

43385332481 is a wasteful number, since it uses less digits than its factorization.

43385332481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766083.

The product of its digits is 829440, while the sum is 44.

The spelling of 43385332481 in words is "forty-three billion, three hundred eighty-five million, three hundred thirty-two thousand, four hundred eighty-one".