43158008506 has 4 divisors (see below), whose sum is σ = 64737012762. Its totient is φ = 21579004252.

The previous prime is 43158008503. The next prime is 43158008521. The reversal of 43158008506 is 60580085134.

43158008506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60580085134 = 2 ⋅30290042567.

It can be written as a sum of positive squares in only one way, i.e., 23590195281 + 19567813225 = 153591^2 + 139885^2 .

It is a super-2 number, since 2×43158008506² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (43158008503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10789502125 + ... + 10789502128.

Almost surely, 2^43158008506 is an apocalyptic number.

43158008506 is a deficient number, since it is larger than the sum of its proper divisors (21579004256).

43158008506 is a wasteful number, since it uses less digits than its factorization.

43158008506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21579004255.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 43158008506 in words is "forty-three billion, one hundred fifty-eight million, eight thousand, five hundred six".