640462614411 has 16 divisors (see below), whose sum is σ = 861564211200. Its totient is φ = 423168547200.

The previous prime is 640462614409. The next prime is 640462614461. The reversal of 640462614411 is 114416264046.

It is not a de Polignac number, because 640462614411 - 2¹ = 640462614409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 640462614411.

It is not an unprimeable number, because it can be changed into a prime (640462614461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5912386 + ... + 6019736.

It is an arithmetic number, because the mean of its divisors is an integer number (53847763200).

Almost surely, 2^640462614411 is an apocalyptic number.

640462614411 is a deficient number, since it is larger than the sum of its proper divisors (221101596789).

640462614411 is a wasteful number, since it uses less digits than its factorization.

640462614411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125066.

The product of its (nonzero) digits is 110592, while the sum is 39.

Adding to 640462614411 its reverse (114416264046), we get a palindrome (754878878457).

The spelling of 640462614411 in words is "six hundred forty billion, four hundred sixty-two million, six hundred fourteen thousand, four hundred eleven".