641558580700 has 72 divisors (see below), whose sum is σ = 1430192836800. Its totient is φ = 249620578560.

The previous prime is 641558580673. The next prime is 641558580713. The reversal of 641558580700 is 7085855146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15071046 + ... + 15113554.

It is an arithmetic number, because the mean of its divisors is an integer number (19863789400).

Almost surely, 2^641558580700 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 641558580700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715096418400).

641558580700 is an abundant number, since it is smaller than the sum of its proper divisors (788634256100).

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

641558580700 is a wasteful number, since it uses less digits than its factorization.

641558580700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46639 (or 46632 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 641558580700 in words is "six hundred forty-one billion, five hundred fifty-eight million, five hundred eighty thousand, seven hundred".