5334437191681 has 4 divisors (see below), whose sum is σ = 5744778514132. Its totient is φ = 4924095869232.

The previous prime is 5334437191673. The next prime is 5334437191717. The reversal of 5334437191681 is 1861917344335.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3523485639025 + 1810951552656 = 1877095^2 + 1345716^2 .

It is a cyclic number.

It is not a de Polignac number, because 5334437191681 - 2³ = 5334437191673 is a prime.

It is a super-2 number, since 2×5334437191681² (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 (5334437192681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205170661206 + ... + 205170661231.

It is an arithmetic number, because the mean of its divisors is an integer number (1436194628533).

Almost surely, 2^{5334437191681} is an apocalyptic number.

It is an amenable number.

5334437191681 is a deficient number, since it is larger than the sum of its proper divisors (410341322451).

5334437191681 is a wasteful number, since it uses less digits than its factorization.

5334437191681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410341322450.

The product of its digits is 6531840, while the sum is 55.

The spelling of 5334437191681 in words is "five trillion, three hundred thirty-four billion, four hundred thirty-seven million, one hundred ninety-one thousand, six hundred eighty-one".