40043000045 has 8 divisors (see below), whose sum is σ = 49708551960. Its totient is φ = 30929765440.

The previous prime is 40043000033. The next prime is 40043000071. The reversal of 40043000045 is 54000034004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5300276809 + 34742723236 = 72803^2 + 186394^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40043000045 - 2¹⁰ = 40042999021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40042999990 and 40043000026.

It is a congruent 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, 138079166 + ... + 138079455.

It is an arithmetic number, because the mean of its divisors is an integer number (6213568995).

Almost surely, 2^40043000045 is an apocalyptic number.

It is an amenable number.

40043000045 is a deficient number, since it is larger than the sum of its proper divisors (9665551915).

40043000045 is a wasteful number, since it uses less digits than its factorization.

40043000045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276158655.

The product of its (nonzero) digits is 960, while the sum is 20.

Adding to 40043000045 its reverse (54000034004), we get a palindrome (94043034049).

The spelling of 40043000045 in words is "forty billion, forty-three million, forty-five", and thus it is an aban number and an uban number.