641883528212 has 36 divisors (see below), whose sum is σ = 1146154663836. Its totient is φ = 314527449600.

The previous prime is 641883528211. The next prime is 641883528227. The reversal of 641883528212 is 212825388146.

641883528212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 96226521616 + 545657006596 = 310204^2 + 738686^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641883528211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3250712 + ... + 3442512.

It is an arithmetic number, because the mean of its divisors is an integer number (31837629551).

Almost surely, 2^641883528212 is an apocalyptic number.

It is an amenable number.

641883528212 is a deficient number, since it is larger than the sum of its proper divisors (504271135624).

641883528212 is a wasteful number, since it uses less digits than its factorization.

641883528212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192108 (or 192033 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 50.

The spelling of 641883528212 in words is "six hundred forty-one billion, eight hundred eighty-three million, five hundred twenty-eight thousand, two hundred twelve".