5271367681 has 4 divisors (see below), whose sum is σ = 5322546112. Its totient is φ = 5220189252.

The previous prime is 5271367679. The next prime is 5271367687. The reversal of 5271367681 is 1867631725.

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 5271367681 - 2¹ = 5271367679 is a prime.

It is a super-2 number, since 2×5271367681² = 55574634456582635522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5271367687) 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, 25589061 + ... + 25589266.

It is an arithmetic number, because the mean of its divisors is an integer number (1330636528).

Almost surely, 2^5271367681 is an apocalyptic number.

It is an amenable number.

5271367681 is a deficient number, since it is larger than the sum of its proper divisors (51178431).

5271367681 is a wasteful number, since it uses less digits than its factorization.

5271367681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51178430.

The product of its digits is 423360, while the sum is 46.

The square root of 5271367681 is about 72604.1850102320. The cubic root of 5271367681 is about 1740.3680554261.

The spelling of 5271367681 in words is "five billion, two hundred seventy-one million, three hundred sixty-seven thousand, six hundred eighty-one".