40044540145 has 8 divisors (see below), whose sum is σ = 50880121704. Its totient is φ = 30151183104.

The previous prime is 40044540143. The next prime is 40044540157. The reversal of 40044540145 is 54104544004.

40044540145 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 4 ways, for example, as 10113118096 + 29931422049 = 100564^2 + 173007^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40044540145 - 2¹ = 40044540143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40044540143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235556034 + ... + 235556203.

It is an arithmetic number, because the mean of its divisors is an integer number (6360015213).

Almost surely, 2^40044540145 is an apocalyptic number.

It is an amenable number.

40044540145 is a deficient number, since it is larger than the sum of its proper divisors (10835581559).

40044540145 is a wasteful number, since it uses less digits than its factorization.

40044540145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471112259.

The product of its (nonzero) digits is 25600, while the sum is 31.

The spelling of 40044540145 in words is "forty billion, forty-four million, five hundred forty thousand, one hundred forty-five".