40502770009 has 27 divisors (see below), whose sum is σ = 44574935223. Its totient is φ = 36785828352.

The previous prime is 40502770001. The next prime is 40502770013. The reversal of 40502770009 is 90007720504.

The square root of 40502770009 is 201253.

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

It can be written as a sum of positive squares in 13 ways, for example, as 39348673225 + 1154096784 = 198365^2 + 33972^2 .

It is not a de Polignac number, because 40502770009 - 2³ = 40502770001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40502770001) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 295640589 + ... + 295640725.

Almost surely, 2^40502770009 is an apocalyptic number.

40502770009 is the 201253-rd square number.

40502770009 is the 100627-th centered octagonal number.

It is an amenable number.

40502770009 is a deficient number, since it is larger than the sum of its proper divisors (4072165214).

40502770009 is an equidigital number, since it uses as much as digits as its factorization.

40502770009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 263 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 40502770009 in words is "forty billion, five hundred two million, seven hundred seventy thousand, nine".