105660616505 has 8 divisors (see below), whose sum is σ = 126798596232. Its totient is φ = 84524588928.

The previous prime is 105660616493. The next prime is 105660616507. The reversal of 105660616505 is 505616066501.

It can be written as a sum of positive squares in 4 ways, for example, as 4414201 + 105656202304 = 2101^2 + 325048^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105660616505 - 2⁴ = 105660616489 is a prime.

It is a super-2 number, since 2×105660616505² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105660616507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366194 + ... + 587723.

It is an arithmetic number, because the mean of its divisors is an integer number (15849824529).

Almost surely, 2^105660616505 is an apocalyptic number.

It is an amenable number.

105660616505 is a deficient number, since it is larger than the sum of its proper divisors (21137979727).

105660616505 is an equidigital number, since it uses as much as digits as its factorization.

105660616505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976075.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 105660616505 in words is "one hundred five billion, six hundred sixty million, six hundred sixteen thousand, five hundred five".