641803915104 has 384 divisors, whose sum is σ = 1958077255680. Its totient is φ = 182157465600.

The previous prime is 641803915073. The next prime is 641803915201. The reversal of 641803915104 is 401519308146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 294539487 + ... + 294541665.

It is an arithmetic number, because the mean of its divisors is an integer number (5099159520).

Almost surely, 2^641803915104 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 641803915104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979038627840).

641803915104 is an abundant number, since it is smaller than the sum of its proper divisors (1316273340576).

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

641803915104 is a wasteful number, since it uses less digits than its factorization.

641803915104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474 (or 2466 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 641803915104 in words is "six hundred forty-one billion, eight hundred three million, nine hundred fifteen thousand, one hundred four".