641231541733 has 8 divisors (see below), whose sum is σ = 679806064640. Its totient is φ = 603775121040.

The previous prime is 641231541647. The next prime is 641231541739. The reversal of 641231541733 is 337145132146.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641231541733 is a prime.

It is a super-3 number, since 3×641231541733³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641231541739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279524373 + ... + 279526666.

It is an arithmetic number, because the mean of its divisors is an integer number (84975758080).

Almost surely, 2^641231541733 is an apocalyptic number.

It is an amenable number.

641231541733 is a deficient number, since it is larger than the sum of its proper divisors (38574522907).

641231541733 is a wasteful number, since it uses less digits than its factorization.

641231541733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559051107.

The product of its digits is 181440, while the sum is 40.

Adding to 641231541733 its reverse (337145132146), we get a palindrome (978376673879).

The spelling of 641231541733 in words is "six hundred forty-one billion, two hundred thirty-one million, five hundred forty-one thousand, seven hundred thirty-three".