105005055550 has 12 divisors (see below), whose sum is σ = 195309403416. Its totient is φ = 42002022200.

The previous prime is 105005055521. The next prime is 105005055553. The reversal of 105005055550 is 55550500501.

It is a super-2 number, since 2×105005055550² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105005055553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1050050506 + ... + 1050050605.

It is an arithmetic number, because the mean of its divisors is an integer number (16275783618).

Almost surely, 2^105005055550 is an apocalyptic number.

105005055550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105005055550 is a deficient number, since it is larger than the sum of its proper divisors (90304347866).

105005055550 is a wasteful number, since it uses less digits than its factorization.

105005055550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100101123 (or 2100101118 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 105005055550 in words is "one hundred five billion, five million, fifty-five thousand, five hundred fifty".