40436565064 has 32 divisors (see below), whose sum is σ = 86815523520. Its totient is φ = 17296808256.

The previous prime is 40436565053. The next prime is 40436565083. The reversal of 40436565064 is 46056563404.

It is a self number, because there is not a number n which added to its sum of digits gives 40436565064.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 661039 + ... + 719614.

It is an arithmetic number, because the mean of its divisors is an integer number (2712985110).

Almost surely, 2^40436565064 is an apocalyptic number.

It is an amenable number.

40436565064 is an abundant number, since it is smaller than the sum of its proper divisors (46378958456).

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

40436565064 is a wasteful number, since it uses less digits than its factorization.

40436565064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381189 (or 1381185 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 40436565064 in words is "forty billion, four hundred thirty-six million, five hundred sixty-five thousand, sixty-four".