11164120550 has 24 divisors (see below), whose sum is σ = 22653016632. Its totient is φ = 4059680000.

The previous prime is 11164120511. The next prime is 11164120579. The reversal of 11164120550 is 5502146111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10148651 + ... + 10149750.

It is an arithmetic number, because the mean of its divisors is an integer number (943875693).

Almost surely, 2^11164120550 is an apocalyptic number.

11164120550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11164120550 is an abundant number, since it is smaller than the sum of its proper divisors (11488896082).

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

11164120550 is a wasteful number, since it uses less digits than its factorization.

11164120550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20298424 (or 20298419 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 11164120550 its reverse (5502146111), we get a palindrome (16666266661).

The spelling of 11164120550 in words is "eleven billion, one hundred sixty-four million, one hundred twenty thousand, five hundred fifty".