40233444021 has 12 divisors (see below), whose sum is σ = 58226526540. Its totient is φ = 26770810560.

The previous prime is 40233444019. The next prime is 40233444029. The reversal of 40233444021 is 12044433204.

It is a happy number.

40233444021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13636400625 + 26597043396 = 116775^2 + 163086^2 .

It is not a de Polignac number, because 40233444021 - 2¹ = 40233444019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40233444029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4285506 + ... + 4294883.

It is an arithmetic number, because the mean of its divisors is an integer number (4852210545).

Almost surely, 2^40233444021 is an apocalyptic number.

It is an amenable number.

40233444021 is a deficient number, since it is larger than the sum of its proper divisors (17993082519).

40233444021 is a wasteful number, since it uses less digits than its factorization.

40233444021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8580916 (or 8580913 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 40233444021 its reverse (12044433204), we get a palindrome (52277877225).

The spelling of 40233444021 in words is "forty billion, two hundred thirty-three million, four hundred forty-four thousand, twenty-one".