640563554035 has 64 divisors (see below), whose sum is σ = 843042816000. Its totient is φ = 465384407040.

The previous prime is 640563554027. The next prime is 640563554041. The reversal of 640563554035 is 530455365046.

It is not a de Polignac number, because 640563554035 - 2³ = 640563554027 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 404650854 + ... + 404652436.

It is an arithmetic number, because the mean of its divisors is an integer number (13172544000).

Almost surely, 2^640563554035 is an apocalyptic number.

640563554035 is a deficient number, since it is larger than the sum of its proper divisors (202479261965).

640563554035 is a wasteful number, since it uses less digits than its factorization.

640563554035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2596.

The product of its (nonzero) digits is 3240000, while the sum is 46.

The spelling of 640563554035 in words is "six hundred forty billion, five hundred sixty-three million, five hundred fifty-four thousand, thirty-five".