43638170045 has 16 divisors (see below), whose sum is σ = 52645692528. Its totient is φ = 34724290560.

The previous prime is 43638170011. The next prime is 43638170071. The reversal of 43638170045 is 54007183634.

It can be written as a sum of positive squares in 8 ways, for example, as 4603079716 + 39035090329 = 67846^2 + 197573^2 .

It is not a de Polignac number, because 43638170045 - 2³² = 39343202749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43638169984 and 43638170011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1011557 + ... + 1053813.

It is an arithmetic number, because the mean of its divisors is an integer number (3290355783).

Almost surely, 2^43638170045 is an apocalyptic number.

It is an amenable number.

43638170045 is a deficient number, since it is larger than the sum of its proper divisors (9007522483).

43638170045 is a wasteful number, since it uses less digits than its factorization.

43638170045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43360.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 43638170045 in words is "forty-three billion, six hundred thirty-eight million, one hundred seventy thousand, forty-five".