43550828137 has 4 divisors (see below), whose sum is σ = 43778843136. Its totient is φ = 43322813140.

The previous prime is 43550828071. The next prime is 43550828221. The reversal of 43550828137 is 73182805534.

43550828137 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43550828137 - 2²³ = 43542439529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43550828537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114007213 + ... + 114007594.

It is an arithmetic number, because the mean of its divisors is an integer number (10944710784).

Almost surely, 2^43550828137 is an apocalyptic number.

It is an amenable number.

43550828137 is a deficient number, since it is larger than the sum of its proper divisors (228014999).

43550828137 is a wasteful number, since it uses less digits than its factorization.

43550828137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228014998.

The product of its (nonzero) digits is 806400, while the sum is 46.

The spelling of 43550828137 in words is "forty-three billion, five hundred fifty million, eight hundred twenty-eight thousand, one hundred thirty-seven".