1012005566550 has 192 divisors, whose sum is σ = 3042915955200. Its totient is φ = 245272924800.

The previous prime is 1012005566521. The next prime is 1012005566597. The reversal of 1012005566550 is 556655002101.

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, 92762496 + ... + 92773404.

It is an arithmetic number, because the mean of its divisors is an integer number (15848520600).

Almost surely, 2^{1012005566550} is an apocalyptic number.

1012005566550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012005566550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521457977600).

1012005566550 is an abundant number, since it is smaller than the sum of its proper divisors (2030910388650).

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

1012005566550 is a wasteful number, since it uses less digits than its factorization.

1012005566550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17188 (or 17177 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 1012005566550 in words is "one trillion, twelve billion, five million, five hundred sixty-six thousand, five hundred fifty".