641332315515232 has 96 divisors (see below), whose sum is σ = 1414742408382240. Its totient is φ = 283614201262080.

The previous prime is 641332315515209. The next prime is 641332315515233. The reversal of 641332315515232 is 232515513233146.

It is a super-2 number, since 2×641332315515232² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641332315515233) 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, 168853428 + ... + 172609804.

It is an arithmetic number, because the mean of its divisors is an integer number (14736900087315).

Almost surely, 2^{641332315515232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641332315515232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707371204191120).

641332315515232 is an abundant number, since it is smaller than the sum of its proper divisors (773410092867008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641332315515232 is a wasteful number, since it uses less digits than its factorization.

641332315515232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769544 (or 3769536 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 46.

Adding to 641332315515232 its reverse (232515513233146), we get a palindrome (873847828748378).

The spelling of 641332315515232 in words is "six hundred forty-one trillion, three hundred thirty-two billion, three hundred fifteen million, five hundred fifteen thousand, two hundred thirty-two".