641161132050 has 96 divisors (see below), whose sum is σ = 1620714303360. Its totient is φ = 167744491200.

The previous prime is 641161132013. The next prime is 641161132093. The reversal of 641161132050 is 50231161146.

It is a happy number.

It is a super-2 number, since 2×641161132050² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 641161131999 and 641161132017.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22317195 + ... + 22345905.

It is an arithmetic number, because the mean of its divisors is an integer number (16882440660).

Almost surely, 2^641161132050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641161132050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810357151680).

641161132050 is an abundant number, since it is smaller than the sum of its proper divisors (979553171310).

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

641161132050 is an equidigital number, since it uses as much as digits as its factorization.

641161132050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28885 (or 28774 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 641161132050 its reverse (50231161146), we get a palindrome (691392293196).

The spelling of 641161132050 in words is "six hundred forty-one billion, one hundred sixty-one million, one hundred thirty-two thousand, fifty".