11006555550 has 24 divisors (see below), whose sum is σ = 27296258136. Its totient is φ = 2935081440.

The previous prime is 11006555471. The next prime is 11006555563. The reversal of 11006555550 is 5555560011.

It is a super-2 number, since 2×11006555550² (a number of 21 digits) contains 22 as substring.

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, 36688369 + ... + 36688668.

It is an arithmetic number, because the mean of its divisors is an integer number (1137344089).

Almost surely, 2^11006555550 is an apocalyptic number.

11006555550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11006555550 is an abundant number, since it is smaller than the sum of its proper divisors (16289702586).

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

11006555550 is a wasteful number, since it uses less digits than its factorization.

11006555550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73377052 (or 73377047 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 11006555550 in words is "eleven billion, six million, five hundred fifty-five thousand, five hundred fifty".