641675638895 has 16 divisors (see below), whose sum is σ = 791288267328. Its totient is φ = 499171875840.

The previous prime is 641675638861. The next prime is 641675638937. The reversal of 641675638895 is 598836576146.

It is not a de Polignac number, because 641675638895 - 2⁶ = 641675638831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708011 + ... + 1335900.

It is an arithmetic number, because the mean of its divisors is an integer number (49455516708).

Almost surely, 2^641675638895 is an apocalyptic number.

641675638895 is a deficient number, since it is larger than the sum of its proper divisors (149612628433).

641675638895 is a wasteful number, since it uses less digits than its factorization.

641675638895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045650.

The product of its digits is 261273600, while the sum is 68.

The spelling of 641675638895 in words is "six hundred forty-one billion, six hundred seventy-five million, six hundred thirty-eight thousand, eight hundred ninety-five".