641036163700 has 144 divisors (see below), whose sum is σ = 1451436320880. Its totient is φ = 245444935680.

The previous prime is 641036163697. The next prime is 641036163707. The reversal of 641036163700 is 7361630146.

It is a happy number.

It can be written as a sum of positive squares in 24 ways, for example, as 629613684324 + 11422479376 = 793482^2 + 106876^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 641036163700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641036163707) 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 47 ways as a sum of consecutive naturals, for example, 177423094 + ... + 177426706.

It is an arithmetic number, because the mean of its divisors is an integer number (10079418895).

Almost surely, 2^641036163700 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 641036163700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725718160440).

641036163700 is an abundant number, since it is smaller than the sum of its proper divisors (810400157180).

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

641036163700 is a wasteful number, since it uses less digits than its factorization.

641036163700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166 (or 4159 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

Adding to 641036163700 its reverse (7361630146), we get a palindrome (648397793846).

The spelling of 641036163700 in words is "six hundred forty-one billion, thirty-six million, one hundred sixty-three thousand, seven hundred".