640152858611 has 24 divisors (see below), whose sum is σ = 742304815200. Its totient is φ = 540762984576.

The previous prime is 640152858581. The next prime is 640152858629. The reversal of 640152858611 is 116858251046.

It is a de Polignac number, because none of the positive numbers 2^k-640152858611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640152858641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18511565 + ... + 18546113.

It is an arithmetic number, because the mean of its divisors is an integer number (30929367300).

Almost surely, 2^640152858611 is an apocalyptic number.

640152858611 is a deficient number, since it is larger than the sum of its proper divisors (102151956589).

640152858611 is a wasteful number, since it uses less digits than its factorization.

640152858611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34971 (or 34832 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The spelling of 640152858611 in words is "six hundred forty billion, one hundred fifty-two million, eight hundred fifty-eight thousand, six hundred eleven".