640650023212014 has 128 divisors (see below), whose sum is σ = 1445467959936000. Its totient is φ = 210297229115904.

The previous prime is 640650023211943. The next prime is 640650023212109. The reversal of 640650023212014 is 410212320056046.

640650023212014 is a `hidden beast` number, since 6 + 4 + 0 + 6 + 500 + 23 + 2 + 120 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 640650023212014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2362779319 + ... + 2363050445.

It is an arithmetic number, because the mean of its divisors is an integer number (11292718437000).

Almost surely, 2^{640650023212014} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 640650023212014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722733979968000).

640650023212014 is an abundant number, since it is smaller than the sum of its proper divisors (804817936723986).

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

640650023212014 is a wasteful number, since it uses less digits than its factorization.

640650023212014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272919 (or 272913 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 640650023212014 in words is "six hundred forty trillion, six hundred fifty billion, twenty-three million, two hundred twelve thousand, fourteen".