105105100550 has 48 divisors (see below), whose sum is σ = 196190871552. Its totient is φ = 41892717600.

The previous prime is 105105100549. The next prime is 105105100571. The reversal of 105105100550 is 55001501501.

It is a happy number.

It is a super-2 number, since 2×105105100550² (a number of 23 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 23 ways as a sum of consecutive naturals, for example, 28474205 + ... + 28477895.

It is an arithmetic number, because the mean of its divisors is an integer number (4087309824).

Almost surely, 2^105105100550 is an apocalyptic number.

105105100550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105105100550 is a deficient number, since it is larger than the sum of its proper divisors (91085771002).

105105100550 is a wasteful number, since it uses less digits than its factorization.

105105100550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573 (or 5568 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 23.

The spelling of 105105100550 in words is "one hundred five billion, one hundred five million, one hundred thousand, five hundred fifty".