640116441325 has 12 divisors (see below), whose sum is σ = 795096610560. Its totient is φ = 511220750960.

The previous prime is 640116441311. The next prime is 640116441337. The reversal of 640116441325 is 523144611046.

It is not a de Polignac number, because 640116441325 - 2¹⁵ = 640116408557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21795085 + ... + 21824434.

It is an arithmetic number, because the mean of its divisors is an integer number (66258050880).

Almost surely, 2^640116441325 is an apocalyptic number.

It is an amenable number.

640116441325 is a deficient number, since it is larger than the sum of its proper divisors (154980169235).

640116441325 is a wasteful number, since it uses less digits than its factorization.

640116441325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43620116 (or 43620111 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 640116441325 in words is "six hundred forty billion, one hundred sixteen million, four hundred forty-one thousand, three hundred twenty-five".