40845622609 has 27 divisors (see below), whose sum is σ = 47432816361. Its totient is φ = 35141669640.

The previous prime is 40845622607. The next prime is 40845622681. The reversal of 40845622609 is 90622654804.

The square root of 40845622609 is 202103.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 40845622609 - 2¹ = 40845622607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40845622603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 42239044 + ... + 42240010.

Almost surely, 2^40845622609 is an apocalyptic number.

40845622609 is the 202103-rd square number.

40845622609 is the 101052-nd centered octagonal number.

It is an amenable number.

40845622609 is a deficient number, since it is larger than the sum of its proper divisors (6587193752).

40845622609 is an frugal number, since it uses more digits than its factorization.

40845622609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 40845622609 in words is "forty billion, eight hundred forty-five million, six hundred twenty-two thousand, six hundred nine".