6641151111 has 48 divisors (see below), whose sum is σ = 11912509440. Its totient is φ = 3479215680.

The previous prime is 6641151109. The next prime is 6641151113. The reversal of 6641151111 is 1111511466.

6641151111 is a `hidden beast` number, since 6 + 641 + 1 + 5 + 1 + 1 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (6641151109) and next prime (6641151113).

It is not a de Polignac number, because 6641151111 - 2¹ = 6641151109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6641151113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52380 + ... + 126593.

It is an arithmetic number, because the mean of its divisors is an integer number (248177280).

Almost surely, 2^6641151111 is an apocalyptic number.

6641151111 is a deficient number, since it is larger than the sum of its proper divisors (5271358329).

6641151111 is a wasteful number, since it uses less digits than its factorization.

6641151111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179036 (or 179033 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 6641151111 is about 81493.2580708368. The cubic root of 6641151111 is about 1879.6678822367.

Adding to 6641151111 its reverse (1111511466), we get a palindrome (7752662577).

The spelling of 6641151111 in words is "six billion, six hundred forty-one million, one hundred fifty-one thousand, one hundred eleven".