641635113153 has 32 divisors (see below), whose sum is σ = 865213949952. Its totient is φ = 422932910400.

The previous prime is 641635113151. The next prime is 641635113173. The reversal of 641635113153 is 351311536146.

It is not a de Polignac number, because 641635113153 - 2¹ = 641635113151 is a prime.

It is a super-2 number, since 2×641635113153² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641635113151) 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 31 ways as a sum of consecutive naturals, for example, 288893583 + ... + 288895803.

It is an arithmetic number, because the mean of its divisors is an integer number (27037935936).

Almost surely, 2^641635113153 is an apocalyptic number.

It is an amenable number.

641635113153 is a deficient number, since it is larger than the sum of its proper divisors (223578836799).

641635113153 is a wasteful number, since it uses less digits than its factorization.

641635113153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725.

The product of its digits is 97200, while the sum is 39.

Adding to 641635113153 its reverse (351311536146), we get a palindrome (992946649299).

The spelling of 641635113153 in words is "six hundred forty-one billion, six hundred thirty-five million, one hundred thirteen thousand, one hundred fifty-three".