641550582616 has 32 divisors (see below), whose sum is σ = 1264369811040. Its totient is φ = 304588903168.

The previous prime is 641550582583. The next prime is 641550582637. The reversal of 641550582616 is 616285055146.

It is a self number, because there is not a number n which added to its sum of digits gives 641550582616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12699931 + ... + 12750346.

It is an arithmetic number, because the mean of its divisors is an integer number (39511556595).

Almost surely, 2^641550582616 is an apocalyptic number.

It is an amenable number.

641550582616 is a deficient number, since it is larger than the sum of its proper divisors (622819228424).

641550582616 is a wasteful number, since it uses less digits than its factorization.

641550582616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25450443 (or 25450439 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 49.

The spelling of 641550582616 in words is "six hundred forty-one billion, five hundred fifty million, five hundred eighty-two thousand, six hundred sixteen".