641104133 has 2 divisors, whose sum is σ = 641104134. Its totient is φ = 641104132.

The previous prime is 641104117. The next prime is 641104141. The reversal of 641104133 is 331401146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458259649 + 182844484 = 21407^2 + 13522^2 .

It is a cyclic number.

It is not a de Polignac number, because 641104133 - 2⁴ = 641104117 is a prime.

It is a super-2 number, since 2×641104133² = 822029018699363378, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641104099 and 641104108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641104433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320552066 + 320552067.

It is an arithmetic number, because the mean of its divisors is an integer number (320552067).

Almost surely, 2^641104133 is an apocalyptic number.

It is an amenable number.

641104133 is a deficient number, since it is larger than the sum of its proper divisors (1).

641104133 is an equidigital number, since it uses as much as digits as its factorization.

641104133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 641104133 is about 25320.0342219358. The cubic root of 641104133 is about 862.2691709675.

Adding to 641104133 its reverse (331401146), we get a palindrome (972505279).

The spelling of 641104133 in words is "six hundred forty-one million, one hundred four thousand, one hundred thirty-three".