43423275818 has 16 divisors (see below), whose sum is σ = 70301536200. Its totient is φ = 19996870656.

The previous prime is 43423275817. The next prime is 43423275829. The reversal of 43423275818 is 81857232434.

It can be written as a sum of positive squares in 4 ways, for example, as 17552805169 + 25870470649 = 132487^2 + 160843^2 .

It is a super-2 number, since 2×43423275818² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43423275817) 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, 1848155 + ... + 1871502.

Almost surely, 2^43423275818 is an apocalyptic number.

43423275818 is a deficient number, since it is larger than the sum of its proper divisors (26878260382).

43423275818 is a wasteful number, since it uses less digits than its factorization.

43423275818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720121.

The product of its digits is 1290240, while the sum is 47.

The spelling of 43423275818 in words is "forty-three billion, four hundred twenty-three million, two hundred seventy-five thousand, eight hundred eighteen".