40433621426 has 16 divisors (see below), whose sum is σ = 66846215520. Its totient is φ = 18189444480.

The previous prime is 40433621407. The next prime is 40433621453. The reversal of 40433621426 is 62412633404.

It is a Curzon 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, 9471536 + ... + 9475803.

It is an arithmetic number, because the mean of its divisors is an integer number (4177888470).

Almost surely, 2^40433621426 is an apocalyptic number.

40433621426 is a deficient number, since it is larger than the sum of its proper divisors (26412594094).

40433621426 is a wasteful number, since it uses less digits than its factorization.

40433621426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18947449.

The product of its (nonzero) digits is 82944, while the sum is 35.

The spelling of 40433621426 in words is "forty billion, four hundred thirty-three million, six hundred twenty-one thousand, four hundred twenty-six".