105810961874 has 4 divisors (see below), whose sum is σ = 158716442814. Its totient is φ = 52905480936.

The previous prime is 105810961811. The next prime is 105810961901. The reversal of 105810961874 is 478169018501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 478169018501 = 21649 ⋅22087349.

It can be written as a sum of positive squares in only one way, i.e., 90075015625 + 15735946249 = 300125^2 + 125443^2 .

It is a super-2 number, since 2×105810961874² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26452740467 + ... + 26452740470.

Almost surely, 2^105810961874 is an apocalyptic number.

105810961874 is a deficient number, since it is larger than the sum of its proper divisors (52905480940).

105810961874 is an equidigital number, since it uses as much as digits as its factorization.

105810961874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52905480939.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 105810961874 in words is "one hundred five billion, eight hundred ten million, nine hundred sixty-one thousand, eight hundred seventy-four".