641135353631 has 8 divisors (see below), whose sum is σ = 673034380800. Its totient is φ = 609937404120.

The previous prime is 641135353597. The next prime is 641135353669. The reversal of 641135353631 is 136353531146.

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-641135353631 is a prime.

It is a super-2 number, since 2×641135353631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641135313631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175267541 + ... + 175271198.

It is an arithmetic number, because the mean of its divisors is an integer number (84129297600).

Almost surely, 2^641135353631 is an apocalyptic number.

641135353631 is a deficient number, since it is larger than the sum of its proper divisors (31899027169).

641135353631 is a wasteful number, since it uses less digits than its factorization.

641135353631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350538829.

The product of its digits is 291600, while the sum is 41.

Adding to 641135353631 its reverse (136353531146), we get a palindrome (777488884777).

The spelling of 641135353631 in words is "six hundred forty-one billion, one hundred thirty-five million, three hundred fifty-three thousand, six hundred thirty-one".