105161510605 has 4 divisors (see below), whose sum is σ = 126193812732. Its totient is φ = 84129208480.

The previous prime is 105161510591. The next prime is 105161510611. The reversal of 105161510605 is 506015161501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 506015161501 = 631 ⋅801925771.

It can be written as a sum of positive squares in 2 ways, for example, as 55581363049 + 49580147556 = 235757^2 + 222666^2 .

It is not a de Polignac number, because 105161510605 - 2⁷ = 105161510477 is a prime.

It is a super-2 number, since 2×105161510605² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10516151056 + ... + 10516151065.

It is an arithmetic number, because the mean of its divisors is an integer number (31548453183).

Almost surely, 2^105161510605 is an apocalyptic number.

It is an amenable number.

105161510605 is a deficient number, since it is larger than the sum of its proper divisors (21032302127).

105161510605 is an equidigital number, since it uses as much as digits as its factorization.

105161510605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21032302126.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 105161510605 in words is "one hundred five billion, one hundred sixty-one million, five hundred ten thousand, six hundred five".