641346232320 has 1120 divisors, whose sum is σ = 2481766566048. Its totient is φ = 157865213952.

The previous prime is 641346232277. The next prime is 641346232327. The reversal of 641346232320 is 23232643146.

641346232320 is a `hidden beast` number, since 6 + 4 + 1 + 3 + 4 + 623 + 2 + 3 + 20 = 666.

It is a super-2 number, since 2×641346232320² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641346232327) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4681359292 + ... + 4681359428.

Almost surely, 2^641346232320 is an apocalyptic number.

641346232320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641346232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240883283024).

641346232320 is an abundant number, since it is smaller than the sum of its proper divisors (1840420333728).

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

641346232320 is a wasteful number, since it uses less digits than its factorization.

641346232320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 641346232320 its reverse (23232643146), we get a palindrome (664578875466).

The spelling of 641346232320 in words is "six hundred forty-one billion, three hundred forty-six million, two hundred thirty-two thousand, three hundred twenty".