641712843216 has 60 divisors (see below), whose sum is σ = 1796425584772. Its totient is φ = 213842239488.

The previous prime is 641712843193. The next prime is 641712843227. The reversal of 641712843216 is 612348217146.

641712843216 is a `hidden beast` number, since 6 + 41 + 7 + 1 + 284 + 321 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 227620593216 + 414092250000 = 477096^2 + 643500^2 .

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 146731 + ... + 1142346.

Almost surely, 2^641712843216 is an apocalyptic number.

It is an amenable number.

641712843216 is an abundant number, since it is smaller than the sum of its proper divisors (1154712741556).

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

641712843216 is a wasteful number, since it uses less digits than its factorization.

641712843216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292548 (or 1292539 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The spelling of 641712843216 in words is "six hundred forty-one billion, seven hundred twelve million, eight hundred forty-three thousand, two hundred sixteen".