641544115199 has 4 divisors (see below), whose sum is σ = 690893662536. Its totient is φ = 592194567864.

The previous prime is 641544115181. The next prime is 641544115211. The reversal of 641544115199 is 991511445146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 641544115199 - 2⁸ = 641544114943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641544115139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24674773649 + ... + 24674773674.

It is an arithmetic number, because the mean of its divisors is an integer number (172723415634).

Almost surely, 2^641544115199 is an apocalyptic number.

641544115199 is a deficient number, since it is larger than the sum of its proper divisors (49349547337).

641544115199 is a wasteful number, since it uses less digits than its factorization.

641544115199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49349547336.

The product of its digits is 777600, while the sum is 50.

The spelling of 641544115199 in words is "six hundred forty-one billion, five hundred forty-four million, one hundred fifteen thousand, one hundred ninety-nine".