11051345550 has 288 divisors, whose sum is σ = 33767838720. Its totient is φ = 2342246400.

The previous prime is 11051345531. The next prime is 11051345587. The reversal of 11051345550 is 5554315011.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 23972320 + ... + 23972780.

It is an arithmetic number, because the mean of its divisors is an integer number (117249440).

Almost surely, 2^11051345550 is an apocalyptic number.

11051345550 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 11051345550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16883919360).

11051345550 is an abundant number, since it is smaller than the sum of its proper divisors (22716493170).

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

11051345550 is a wasteful number, since it uses less digits than its factorization.

11051345550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 11051345550 in words is "eleven billion, fifty-one million, three hundred forty-five thousand, five hundred fifty".