43145102005 has 16 divisors (see below), whose sum is σ = 51993183600. Its totient is φ = 34370316288.

The previous prime is 43145101999. The next prime is 43145102059. The reversal of 43145102005 is 50020154134.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10323982449 + 32821119556 = 101607^2 + 181166^2 .

It is a cyclic number.

It is not a de Polignac number, because 43145102005 - 2³ = 43145101997 is a prime.

It is a super-2 number, since 2×43145102005² (a number of 22 digits) contains 22 as substring.

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, 1277071 + ... + 1310419.

It is an arithmetic number, because the mean of its divisors is an integer number (3249573975).

Almost surely, 2^43145102005 is an apocalyptic number.

It is an amenable number.

43145102005 is a deficient number, since it is larger than the sum of its proper divisors (8848081595).

43145102005 is a wasteful number, since it uses less digits than its factorization.

43145102005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34440.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 43145102005 its reverse (50020154134), we get a palindrome (93165256139).

The spelling of 43145102005 in words is "forty-three billion, one hundred forty-five million, one hundred two thousand, five".