105705560557 has 4 divisors (see below), whose sum is σ = 105759798300. Its totient is φ = 105651322816.

The previous prime is 105705560497. The next prime is 105705560561. The reversal of 105705560557 is 755065507501.

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 39214296676 + 66491263881 = 198026^2 + 257859^2 .

It is a cyclic number.

It is not a de Polignac number, because 105705560557 - 2¹¹ = 105705558509 is a prime.

It is a super-2 number, since 2×105705560557² (a number of 23 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 (105705570557) 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, 27115948 + ... + 27119845.

It is an arithmetic number, because the mean of its divisors is an integer number (26439949575).

Almost surely, 2^105705560557 is an apocalyptic number.

It is an amenable number.

105705560557 is a deficient number, since it is larger than the sum of its proper divisors (54237743).

105705560557 is an equidigital number, since it uses as much as digits as its factorization.

105705560557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54237742.

The product of its (nonzero) digits is 918750, while the sum is 46.

The spelling of 105705560557 in words is "one hundred five billion, seven hundred five million, five hundred sixty thousand, five hundred fifty-seven".