641044970867 has 16 divisors (see below), whose sum is σ = 771208473600. Its totient is φ = 520529872320.

The previous prime is 641044970857. The next prime is 641044970873. The reversal of 641044970867 is 768079440146.

641044970867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 641044970867 - 2⁶ = 641044970803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641044970857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4927142 + ... + 5055572.

It is an arithmetic number, because the mean of its divisors is an integer number (48200529600).

Almost surely, 2^641044970867 is an apocalyptic number.

641044970867 is a deficient number, since it is larger than the sum of its proper divisors (130163502733).

641044970867 is a wasteful number, since it uses less digits than its factorization.

641044970867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165986.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 641044970867 in words is "six hundred forty-one billion, forty-four million, nine hundred seventy thousand, eight hundred sixty-seven".