10011010505550 has 96 divisors (see below), whose sum is σ = 25002006456672. Its totient is φ = 2650883642880.

The previous prime is 10011010505539. The next prime is 10011010505557. The reversal of 10011010505550 is 5550501011001.

It is a self number, because there is not a number n which added to its sum of digits gives 10011010505550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011010505557) 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, 11762992 + ... + 12585308.

It is an arithmetic number, because the mean of its divisors is an integer number (260437567257).

Almost surely, 2^{10011010505550} is an apocalyptic number.

10011010505550 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 10011010505550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12501003228336).

10011010505550 is an abundant number, since it is smaller than the sum of its proper divisors (14990995951122).

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

10011010505550 is a wasteful number, since it uses less digits than its factorization.

10011010505550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822902 (or 822897 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 24.

Adding to 10011010505550 its reverse (5550501011001), we get a palindrome (15561511516551).

The spelling of 10011010505550 in words is "ten trillion, eleven billion, ten million, five hundred five thousand, five hundred fifty".