4563641021550 has 192 divisors, whose sum is σ = 12723400650240. Its totient is φ = 1074090631680.

The previous prime is 4563641021549. The next prime is 4563641021561. The reversal of 4563641021550 is 551201463654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 121390156 + ... + 121427744.

It is an arithmetic number, because the mean of its divisors is an integer number (66267711720).

Almost surely, 2^{4563641021550} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4563641021550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6361700325120).

4563641021550 is an abundant number, since it is smaller than the sum of its proper divisors (8159759628690).

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

4563641021550 is a wasteful number, since it uses less digits than its factorization.

4563641021550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40347 (or 40342 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 4563641021550 in words is "four trillion, five hundred sixty-three billion, six hundred forty-one million, twenty-one thousand, five hundred fifty".