40645132205 has 8 divisors (see below), whose sum is σ = 48840703512. Its totient is φ = 32471742528.

The previous prime is 40645132169. The next prime is 40645132217. The reversal of 40645132205 is 50223154604.

It can be written as a sum of positive squares in 4 ways, for example, as 10874735524 + 29770396681 = 104282^2 + 172541^2 .

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 40645132205 - 2²⁰ = 40644083629 is a prime.

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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5541374 + ... + 5548703.

It is an arithmetic number, because the mean of its divisors is an integer number (6105087939).

Almost surely, 2^40645132205 is an apocalyptic number.

It is an amenable number.

40645132205 is a deficient number, since it is larger than the sum of its proper divisors (8195571307).

40645132205 is a wasteful number, since it uses less digits than its factorization.

40645132205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11090815.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 40645132205 its reverse (50223154604), we get a palindrome (90868286809).

The spelling of 40645132205 in words is "forty billion, six hundred forty-five million, one hundred thirty-two thousand, two hundred five".