641616725211 has 96 divisors (see below), whose sum is σ = 1131628904448. Its totient is φ = 314053312320.

The previous prime is 641616725173. The next prime is 641616725237. The reversal of 641616725211 is 112527616146.

641616725211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641616725211 - 2¹⁹ = 641616200923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (641616725291) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8148150 + ... + 8226516.

It is an arithmetic number, because the mean of its divisors is an integer number (11787801088).

Almost surely, 2^641616725211 is an apocalyptic number.

641616725211 is a deficient number, since it is larger than the sum of its proper divisors (490012179237).

641616725211 is a wasteful number, since it uses less digits than its factorization.

641616725211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78501 (or 78478 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The spelling of 641616725211 in words is "six hundred forty-one billion, six hundred sixteen million, seven hundred twenty-five thousand, two hundred eleven".