641694315048 has 32 divisors (see below), whose sum is σ = 1604271281760. Its totient is φ = 213893372480.

The previous prime is 641694315043. The next prime is 641694315077. The reversal of 641694315048 is 840513496146.

It is a happy number.

641694315048 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (641694315043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 912238 + ... + 1454498.

It is an arithmetic number, because the mean of its divisors is an integer number (50133477555).

Almost surely, 2^641694315048 is an apocalyptic number.

It is an amenable number.

641694315048 is an abundant number, since it is smaller than the sum of its proper divisors (962576966712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641694315048 is a wasteful number, since it uses less digits than its factorization.

641694315048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591577 (or 591573 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 641694315048 in words is "six hundred forty-one billion, six hundred ninety-four million, three hundred fifteen thousand, forty-eight".