640616344053 has 16 divisors (see below), whose sum is σ = 1027555038720. Its totient is φ = 346799825136.

The previous prime is 640616344037. The next prime is 640616344063. The reversal of 640616344053 is 350443616046.

It is not a de Polignac number, because 640616344053 - 2⁴ = 640616344037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 640616343996 and 640616344014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640616344063) 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, 802776975 + ... + 802777772.

It is an arithmetic number, because the mean of its divisors is an integer number (64222189920).

Almost surely, 2^640616344053 is an apocalyptic number.

It is an amenable number.

640616344053 is a deficient number, since it is larger than the sum of its proper divisors (386938694667).

640616344053 is a wasteful number, since it uses less digits than its factorization.

640616344053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605554776.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 640616344053 in words is "six hundred forty billion, six hundred sixteen million, three hundred forty-four thousand, fifty-three".