6641140401 has 16 divisors (see below), whose sum is σ = 11244259200. Its totient is φ = 3794937264.

The previous prime is 6641140399. The next prime is 6641140411. The reversal of 6641140401 is 1040411466.

6641140401 is a `hidden beast` number, since 6 + 641 + 14 + 0 + 4 + 0 + 1 = 666.

It is not a de Polignac number, because 6641140401 - 2¹ = 6641140399 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (6641140411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17568966 + ... + 17569343.

It is an arithmetic number, because the mean of its divisors is an integer number (702766200).

Almost surely, 2^6641140401 is an apocalyptic number.

It is an amenable number.

6641140401 is a deficient number, since it is larger than the sum of its proper divisors (4603118799).

6641140401 is a wasteful number, since it uses less digits than its factorization.

6641140401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35138325 (or 35138319 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 6641140401 is about 81493.1923598530. The cubic root of 6641140401 is about 1879.6668718068. Note that the first 3 decimals are identical.

Adding to 6641140401 its reverse (1040411466), we get a palindrome (7681551867).

The spelling of 6641140401 in words is "six billion, six hundred forty-one million, one hundred forty thousand, four hundred one".