281055105500 has 48 divisors (see below), whose sum is σ = 661041623424. Its totient is φ = 103774190400.

The previous prime is 281055105391. The next prime is 281055105557. The reversal of 281055105500 is 5501550182.

It is a super-2 number, since 2×281055105500² (a number of 24 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 15 ways as a sum of consecutive naturals, for example, 21613124 + ... + 21626123.

It is an arithmetic number, because the mean of its divisors is an integer number (13771700488).

Almost surely, 2^281055105500 is an apocalyptic number.

281055105500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

281055105500 is an abundant number, since it is smaller than the sum of its proper divisors (379986517924).

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

281055105500 is a wasteful number, since it uses less digits than its factorization.

281055105500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43239279 (or 43239267 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 32.

Adding to 281055105500 its reverse (5501550182), we get a palindrome (286556655682).

The spelling of 281055105500 in words is "two hundred eighty-one billion, fifty-five million, one hundred five thousand, five hundred".