105100110561605 has 4 divisors (see below), whose sum is σ = 126120132673932. Its totient is φ = 84080088449280.

The previous prime is 105100110561601. The next prime is 105100110561613. The reversal of 105100110561605 is 506165011001501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22947223186276 + 82152887375329 = 4790326^2 + 9063823^2 .

It is not a de Polignac number, because 105100110561605 - 2² = 105100110561601 is a prime.

It is a super-2 number, since 2×105100110561605² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105100110561601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10510011056156 + ... + 10510011056165.

It is an arithmetic number, because the mean of its divisors is an integer number (31530033168483).

Almost surely, 2^{105100110561605} is an apocalyptic number.

It is an amenable number.

105100110561605 is a deficient number, since it is larger than the sum of its proper divisors (21020022112327).

105100110561605 is an equidigital number, since it uses as much as digits as its factorization.

105100110561605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020022112326.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 105100110561605 in words is "one hundred five trillion, one hundred billion, one hundred ten million, five hundred sixty-one thousand, six hundred five".