43061381020 has 24 divisors (see below), whose sum is σ = 103347314784. Its totient is φ = 14763902016.

The previous prime is 43061380997. The next prime is 43061381039. The reversal of 43061381020 is 2018316034.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 43061381020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153790507 + ... + 153790786.

It is an arithmetic number, because the mean of its divisors is an integer number (4306138116).

Almost surely, 2^43061381020 is an apocalyptic number.

It is an amenable number.

43061381020 is an abundant number, since it is smaller than the sum of its proper divisors (60285933764).

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

43061381020 is a wasteful number, since it uses less digits than its factorization.

43061381020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307581309 (or 307581307 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 43061381020 its reverse (2018316034), we get a palindrome (45079697054).

The spelling of 43061381020 in words is "forty-three billion, sixty-one million, three hundred eighty-one thousand, twenty".