40002068736 has 108 divisors (see below), whose sum is σ = 131812425472. Its totient is φ = 11429157888.

The previous prime is 40002068731. The next prime is 40002068747. The reversal of 40002068736 is 63786020004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40002068736.

It is not an unprimeable number, because it can be changed into a prime (40002068731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1224016 + ... + 1256271.

Almost surely, 2^40002068736 is an apocalyptic number.

It is an amenable number.

40002068736 is an abundant number, since it is smaller than the sum of its proper divisors (91810356736).

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

40002068736 is a wasteful number, since it uses less digits than its factorization.

40002068736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480316 (or 2480299 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 40002068736 in words is "forty billion, two million, sixty-eight thousand, seven hundred thirty-six".