43143522989 has 12 divisors (see below), whose sum is σ = 50365982268. Its totient is φ = 36848548800.

The previous prime is 43143522967. The next prime is 43143522997. The reversal of 43143522989 is 98922534134.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26362393225 + 16781129764 = 162365^2 + 129542^2 .

It is not a de Polignac number, because 43143522989 - 2¹² = 43143518893 is a prime.

It is a super-2 number, since 2×43143522989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43143522689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1552922 + ... + 1580459.

It is an arithmetic number, because the mean of its divisors is an integer number (4197165189).

Almost surely, 2^43143522989 is an apocalyptic number.

43143522989 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

43143522989 is a deficient number, since it is larger than the sum of its proper divisors (7222459279).

43143522989 is a wasteful number, since it uses less digits than its factorization.

43143522989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133676 (or 3133669 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The spelling of 43143522989 in words is "forty-three billion, one hundred forty-three million, five hundred twenty-two thousand, nine hundred eighty-nine".