6541123113 has 32 divisors (see below), whose sum is σ = 11097630720. Its totient is φ = 3730119120.

The previous prime is 6541123109. The next prime is 6541123129. The reversal of 6541123113 is 3113211456.

It is a happy number.

6541123113 is a `hidden beast` number, since 6 + 5 + 411 + 231 + 13 = 666.

It is not a de Polignac number, because 6541123113 - 2² = 6541123109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6541125113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57556 + ... + 128042.

It is an arithmetic number, because the mean of its divisors is an integer number (346800960).

Almost surely, 2^6541123113 is an apocalyptic number.

6541123113 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

6541123113 is a deficient number, since it is larger than the sum of its proper divisors (4556507607).

6541123113 is a wasteful number, since it uses less digits than its factorization.

6541123113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70994 (or 70988 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 6541123113 is about 80877.2100965408. The cubic root of 6541123113 is about 1870.1830121056.

Adding to 6541123113 its reverse (3113211456), we get a palindrome (9654334569).

The spelling of 6541123113 in words is "six billion, five hundred forty-one million, one hundred twenty-three thousand, one hundred thirteen".