640030940067 has 8 divisors (see below), whose sum is σ = 880902799360. Its totient is φ = 412923187080.

The previous prime is 640030940011. The next prime is 640030940089. The reversal of 640030940067 is 760049030046.

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

It is not a de Polignac number, because 640030940067 - 2¹⁴ = 640030923683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640030945067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3441026467 + ... + 3441026652.

It is an arithmetic number, because the mean of its divisors is an integer number (110112849920).

Almost surely, 2^640030940067 is an apocalyptic number.

640030940067 is a deficient number, since it is larger than the sum of its proper divisors (240871859293).

640030940067 is a wasteful number, since it uses less digits than its factorization.

640030940067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882053153.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 640030940067 in words is "six hundred forty billion, thirty million, nine hundred forty thousand, sixty-seven".