6433136641 has 4 divisors (see below), whose sum is σ = 6771722800. Its totient is φ = 6094550484.

The previous prime is 6433136627. The next prime is 6433136659. The reversal of 6433136641 is 1466313346.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6433136641 - 2¹¹ = 6433134593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6433136641.

It is not an unprimeable number, because it can be changed into a prime (6433136441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169293051 + ... + 169293088.

It is an arithmetic number, because the mean of its divisors is an integer number (1692930700).

Almost surely, 2^6433136641 is an apocalyptic number.

It is an amenable number.

6433136641 is a deficient number, since it is larger than the sum of its proper divisors (338586159).

6433136641 is a wasteful number, since it uses less digits than its factorization.

6433136641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338586158.

The product of its digits is 93312, while the sum is 37.

The square root of 6433136641 is about 80206.8366225723. The cubic root of 6433136641 is about 1859.8343245696.

Adding to 6433136641 its reverse (1466313346), we get a palindrome (7899449987).

The spelling of 6433136641 in words is "six billion, four hundred thirty-three million, one hundred thirty-six thousand, six hundred forty-one".