5321127681 has 16 divisors (see below), whose sum is σ = 7933369600. Its totient is φ = 3524820624.

The previous prime is 5321127673. The next prime is 5321127683. The reversal of 5321127681 is 1867211235.

5321127681 is a `hidden beast` number, since 532 + 112 + 7 + 6 + 8 + 1 = 666.

It is not a de Polignac number, because 5321127681 - 2³ = 5321127673 is a prime.

It is a super-2 number, since 2×5321127681² = 56628799595008875522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5321127683) 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 15 ways as a sum of consecutive naturals, for example, 623401 + ... + 631878.

It is an arithmetic number, because the mean of its divisors is an integer number (495835600).

Almost surely, 2^5321127681 is an apocalyptic number.

It is an amenable number.

5321127681 is a deficient number, since it is larger than the sum of its proper divisors (2612241919).

5321127681 is a wasteful number, since it uses less digits than its factorization.

5321127681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255445 (or 1255439 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 5321127681 is about 72946.0600786636. The cubic root of 5321127681 is about 1745.8270839964.

The spelling of 5321127681 in words is "five billion, three hundred twenty-one million, one hundred twenty-seven thousand, six hundred eighty-one".