43625136778105 has 4 divisors (see below), whose sum is σ = 52350164133732. Its totient is φ = 34900109422480.

The previous prime is 43625136778049. The next prime is 43625136778117. The reversal of 43625136778105 is 50187763152634.

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 6644496046864 + 36980640731241 = 2577692^2 + 6081171^2 .

It is a de Polignac number, because none of the positive numbers 2^k-43625136778105 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43625136778105.

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, 4362513677806 + ... + 4362513677815.

It is an arithmetic number, because the mean of its divisors is an integer number (13087541033433).

Almost surely, 2^{43625136778105} is an apocalyptic number.

It is an amenable number.

43625136778105 is a deficient number, since it is larger than the sum of its proper divisors (8725027355627).

43625136778105 is an equidigital number, since it uses as much as digits as its factorization.

43625136778105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8725027355626.

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 43625136778105 in words is "forty-three trillion, six hundred twenty-five billion, one hundred thirty-six million, seven hundred seventy-eight thousand, one hundred five".