40043017636 has 24 divisors (see below), whose sum is σ = 73781275680. Its totient is φ = 18963162432.

The previous prime is 40043017589. The next prime is 40043017661. The reversal of 40043017636 is 63671034004.

It is a super-3 number, since 3×40043017636³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 264000 + ... + 387016.

It is an arithmetic number, because the mean of its divisors is an integer number (3074219820).

Almost surely, 2^40043017636 is an apocalyptic number.

It is an amenable number.

40043017636 is a deficient number, since it is larger than the sum of its proper divisors (33738258044).

40043017636 is a wasteful number, since it uses less digits than its factorization.

40043017636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127323 (or 127321 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 40043017636 in words is "forty billion, forty-three million, seventeen thousand, six hundred thirty-six".