40165644245 has 8 divisors (see below), whose sum is σ = 48550589784. Its totient is φ = 31897970944.

The previous prime is 40165644223. The next prime is 40165644289. The reversal of 40165644245 is 54244656104.

It can be written as a sum of positive squares in 4 ways, for example, as 7872835441 + 32292808804 = 88729^2 + 179702^2 .

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 40165644245 - 2⁸ = 40165643989 is a prime.

It is a super-2 number, since 2×40165644245² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29317304 + ... + 29318673.

It is an arithmetic number, because the mean of its divisors is an integer number (6068823723).

Almost surely, 2^40165644245 is an apocalyptic number.

It is an amenable number.

40165644245 is a deficient number, since it is larger than the sum of its proper divisors (8384945539).

40165644245 is a wasteful number, since it uses less digits than its factorization.

40165644245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58636119.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 40165644245 in words is "forty billion, one hundred sixty-five million, six hundred forty-four thousand, two hundred forty-five".