40009665100 has 36 divisors (see below), whose sum is σ = 89167494304. Its totient is φ = 15571327680.

The previous prime is 40009665083. The next prime is 40009665107. The reversal of 40009665100 is 156690004.

It is not an unprimeable number, because it can be changed into a prime (40009665107) 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, 5403012 + ... + 5410411.

Almost surely, 2^40009665100 is an apocalyptic number.

It is an amenable number.

40009665100 is an abundant number, since it is smaller than the sum of its proper divisors (49157829204).

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

40009665100 is a wasteful number, since it uses less digits than its factorization.

40009665100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10813474 (or 10813467 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 40009665100 in words is "forty billion, nine million, six hundred sixty-five thousand, one hundred".