5438161871521 has 8 divisors (see below), whose sum is σ = 5484521393024. Its totient is φ = 5391960845040.

The previous prime is 5438161871501. The next prime is 5438161871533. The reversal of 5438161871521 is 1251781618345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5438161871521 - 2⁵ = 5438161871489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5438161871501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39554841 + ... + 39692086.

It is an arithmetic number, because the mean of its divisors is an integer number (685565174128).

Almost surely, 2^{5438161871521} is an apocalyptic number.

It is an amenable number.

5438161871521 is a deficient number, since it is larger than the sum of its proper divisors (46359521503).

5438161871521 is a wasteful number, since it uses less digits than its factorization.

5438161871521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79247511.

The product of its digits is 1612800, while the sum is 52.

The spelling of 5438161871521 in words is "five trillion, four hundred thirty-eight billion, one hundred sixty-one million, eight hundred seventy-one thousand, five hundred twenty-one".