40508372009 has 8 divisors (see below), whose sum is σ = 47371917120. Its totient is φ = 33913985616.

The previous prime is 40508371991. The next prime is 40508372011. The reversal of 40508372009 is 90027380504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40508372009 - 2¹⁶ = 40508306473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40508372029) 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 7 ways as a sum of consecutive naturals, for example, 67289354 + ... + 67289955.

It is an arithmetic number, because the mean of its divisors is an integer number (5921489640).

Almost surely, 2^40508372009 is an apocalyptic number.

It is an amenable number.

40508372009 is a deficient number, since it is larger than the sum of its proper divisors (6863545111).

40508372009 is a wasteful number, since it uses less digits than its factorization.

40508372009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134579359.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 40508372009 in words is "forty billion, five hundred eight million, three hundred seventy-two thousand, nine".