6641156133 has 24 divisors (see below), whose sum is σ = 9907023360. Its totient is φ = 4282541280.

The previous prime is 6641156129. The next prime is 6641156167. The reversal of 6641156133 is 3316511466.

6641156133 is a `hidden beast` number, since 6 + 64 + 1 + 1 + 561 + 33 = 666.

It is not a de Polignac number, because 6641156133 - 2² = 6641156129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641156173) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 746928 + ... + 755766.

It is an arithmetic number, because the mean of its divisors is an integer number (412792640).

Almost surely, 2^6641156133 is an apocalyptic number.

It is an amenable number.

6641156133 is a deficient number, since it is larger than the sum of its proper divisors (3265867227).

6641156133 is a wasteful number, since it uses less digits than its factorization.

6641156133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11569 (or 11566 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 6641156133 is about 81493.2888831958. The cubic root of 6641156133 is about 1879.6683560346.

Adding to 6641156133 its reverse (3316511466), we get a palindrome (9957667599).

The spelling of 6641156133 in words is "six billion, six hundred forty-one million, one hundred fifty-six thousand, one hundred thirty-three".