1205750216550 has 96 divisors (see below), whose sum is σ = 3263826887424. Its totient is φ = 292148560000.

The previous prime is 1205750216549. The next prime is 1205750216597. The reversal of 1205750216550 is 556120575021.

It is a junction number, because it is equal to n+sod(n) for n = 1205750216499 and 1205750216508.

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 47 ways as a sum of consecutive naturals, for example, 2944447 + ... + 3328853.

It is an arithmetic number, because the mean of its divisors is an integer number (33998196744).

Almost surely, 2^{1205750216550} is an apocalyptic number.

1205750216550 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 1205750216550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1631913443712).

1205750216550 is an abundant number, since it is smaller than the sum of its proper divisors (2058076670874).

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

1205750216550 is a wasteful number, since it uses less digits than its factorization.

1205750216550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386334 (or 386329 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 39.

The spelling of 1205750216550 in words is "one trillion, two hundred five billion, seven hundred fifty million, two hundred sixteen thousand, five hundred fifty".