40809503232 has 120 divisors (see below), whose sum is σ = 117915264324. Its totient is φ = 13587431424.

The previous prime is 40809503219. The next prime is 40809503237. The reversal of 40809503232 is 23230590804.

40809503232 is a `hidden beast` number, since 40 + 80 + 9 + 503 + 2 + 32 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 37363343616 + 3446159616 = 193296^2 + 58704^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40809503237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4386778 + ... + 4396070.

Almost surely, 2^40809503232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40809503232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58957632162).

40809503232 is an abundant number, since it is smaller than the sum of its proper divisors (77105761092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40809503232 is an equidigital number, since it uses as much as digits as its factorization.

40809503232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10270 (or 10251 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 40809503232 in words is "forty billion, eight hundred nine million, five hundred three thousand, two hundred thirty-two".