641682139306 has 16 divisors (see below), whose sum is σ = 1091119428000. Its totient is φ = 280573566768.

The previous prime is 641682139303. The next prime is 641682139361. The reversal of 641682139306 is 603931286146.

It is a happy number.

641682139306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 641682139306.

It is not an unprimeable number, because it can be changed into a prime (641682139303) 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, 649475356 + ... + 649476343.

It is an arithmetic number, because the mean of its divisors is an integer number (68194964250).

Almost surely, 2^641682139306 is an apocalyptic number.

641682139306 is a deficient number, since it is larger than the sum of its proper divisors (449437288694).

641682139306 is a wasteful number, since it uses less digits than its factorization.

641682139306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298951733.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 641682139306 in words is "six hundred forty-one billion, six hundred eighty-two million, one hundred thirty-nine thousand, three hundred six".