641111200111 has 8 divisors (see below), whose sum is σ = 649955013344. Its totient is φ = 632269048320.

The previous prime is 641111200073. The next prime is 641111200133. The reversal of 641111200111 is 111002111146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 641111200111 - 2¹⁹ = 641110675823 is a prime.

It is a super-2 number, since 2×641111200111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641111200811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371935 + ... + 1191871.

It is an arithmetic number, because the mean of its divisors is an integer number (81244376668).

Almost surely, 2^641111200111 is an apocalyptic number.

641111200111 is a deficient number, since it is larger than the sum of its proper divisors (8843813233).

641111200111 is a wasteful number, since it uses less digits than its factorization.

641111200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830721.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 641111200111 its reverse (111002111146), we get a palindrome (752113311257).

The spelling of 641111200111 in words is "six hundred forty-one billion, one hundred eleven million, two hundred thousand, one hundred eleven".