5156021333171 has 4 divisors (see below), whose sum is σ = 5164040029512. Its totient is φ = 5148002636832.

The previous prime is 5156021333161. The next prime is 5156021333173. The reversal of 5156021333171 is 1713331206515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5156021333171 - 2¹⁸ = 5156021071027 is a prime.

It is a super-2 number, since 2×5156021333171² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5156021333173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4009347206 + ... + 4009348491.

It is an arithmetic number, because the mean of its divisors is an integer number (1291010007378).

Almost surely, 2^{5156021333171} is an apocalyptic number.

5156021333171 is a deficient number, since it is larger than the sum of its proper divisors (8018696341).

5156021333171 is an equidigital number, since it uses as much as digits as its factorization.

5156021333171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8018696340.

The product of its (nonzero) digits is 56700, while the sum is 38.

Adding to 5156021333171 its reverse (1713331206515), we get a palindrome (6869352539686).

The spelling of 5156021333171 in words is "five trillion, one hundred fifty-six billion, twenty-one million, three hundred thirty-three thousand, one hundred seventy-one".