40000664004 has 48 divisors (see below), whose sum is σ = 108476390400. Its totient is φ = 11235051936.

The previous prime is 40000663993. The next prime is 40000664009. The reversal of 40000664004 is 40046600004.

It is not an unprimeable number, because it can be changed into a prime (40000664009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4030624 + ... + 4040535.

It is an arithmetic number, because the mean of its divisors is an integer number (2259924800).

Almost surely, 2^40000664004 is an apocalyptic number.

It is an amenable number.

40000664004 is an abundant number, since it is smaller than the sum of its proper divisors (68475726396).

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

40000664004 is a wasteful number, since it uses less digits than its factorization.

40000664004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8071232 (or 8071230 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The spelling of 40000664004 in words is "forty billion, six hundred sixty-four thousand, four".