105500238391 has 4 divisors (see below), whose sum is σ = 105833047032. Its totient is φ = 105167429752.

The previous prime is 105500238383. The next prime is 105500238397. The reversal of 105500238391 is 193832005501.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105500238391 - 2³ = 105500238383 is a prime.

It is a super-2 number, since 2×105500238391² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105500238391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105500238397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166403845 + ... + 166404478.

It is an arithmetic number, because the mean of its divisors is an integer number (26458261758).

Almost surely, 2^105500238391 is an apocalyptic number.

105500238391 is a deficient number, since it is larger than the sum of its proper divisors (332808641).

105500238391 is an equidigital number, since it uses as much as digits as its factorization.

105500238391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332808640.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 105500238391 in words is "one hundred five billion, five hundred million, two hundred thirty-eight thousand, three hundred ninety-one".