641366818050 has 96 divisors (see below), whose sum is σ = 1818415613952. Its totient is φ = 146549839680.

The previous prime is 641366818039. The next prime is 641366818051. The reversal of 641366818050 is 50818663146.

It is a super-2 number, since 2×641366818050² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641366818051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3138087 + ... + 3336213.

It is an arithmetic number, because the mean of its divisors is an integer number (18941829312).

Almost surely, 2^641366818050 is an apocalyptic number.

641366818050 is an abundant number, since it is smaller than the sum of its proper divisors (1177048795902).

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

641366818050 is a wasteful number, since it uses less digits than its factorization.

641366818050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201232 (or 201227 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 641366818050 in words is "six hundred forty-one billion, three hundred sixty-six million, eight hundred eighteen thousand, fifty".