43643575426 has 48 divisors (see below), whose sum is σ = 72344075328. Its totient is φ = 19731872160.

The previous prime is 43643575421. The next prime is 43643575501. The reversal of 43643575426 is 62457534634.

It is a self number, because there is not a number n which added to its sum of digits gives 43643575426.

It is not an unprimeable number, because it can be changed into a prime (43643575421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64465800 + ... + 64466476.

It is an arithmetic number, because the mean of its divisors is an integer number (1507168236).

Almost surely, 2^43643575426 is an apocalyptic number.

43643575426 is a deficient number, since it is larger than the sum of its proper divisors (28700499902).

43643575426 is a wasteful number, since it uses less digits than its factorization.

43643575426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735 (or 1724 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 49.

The spelling of 43643575426 in words is "forty-three billion, six hundred forty-three million, five hundred seventy-five thousand, four hundred twenty-six".