641016120 has 128 divisors (see below), whose sum is σ = 2009318400. Its totient is φ = 163431936.

The previous prime is 641016119. The next prime is 641016137. The reversal of 641016120 is 21610146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260737 + ... + 263183.

It is an arithmetic number, because the mean of its divisors is an integer number (15697800).

Almost surely, 2^641016120 is an apocalyptic number.

641016120 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 641016120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1004659200).

641016120 is an abundant number, since it is smaller than the sum of its proper divisors (1368302280).

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

641016120 is a wasteful number, since it uses less digits than its factorization.

641016120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557 (or 2553 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 641016120 is about 25318.2961512026. The cubic root of 641016120 is about 862.2297107270.

Adding to 641016120 its reverse (21610146), we get a palindrome (662626266).

The spelling of 641016120 in words is "six hundred forty-one million, sixteen thousand, one hundred twenty".