40045023444 has 24 divisors (see below), whose sum is σ = 93453928960. Its totient is φ = 13346121024.

The previous prime is 40045023437. The next prime is 40045023457. The reversal of 40045023444 is 44432054004.

It is a super-2 number, since 2×40045023444² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 201529 + ... + 347424.

Almost surely, 2^40045023444 is an apocalyptic number.

It is an amenable number.

40045023444 is an abundant number, since it is smaller than the sum of its proper divisors (53408905516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40045023444 is a wasteful number, since it uses less digits than its factorization.

40045023444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555039 (or 555037 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 30.

Adding to 40045023444 its reverse (44432054004), we get a palindrome (84477077448).

The spelling of 40045023444 in words is "forty billion, forty-five million, twenty-three thousand, four hundred forty-four".