7133948881 has 4 divisors (see below), whose sum is σ = 7214105700. Its totient is φ = 7053792064.

The previous prime is 7133948851. The next prime is 7133948891. The reversal of 7133948881 is 1888493317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1888493317 = 22091 ⋅85487.

It can be written as a sum of positive squares in 2 ways, for example, as 4400332225 + 2733616656 = 66335^2 + 52284^2 .

It is a cyclic number.

It is not a de Polignac number, because 7133948881 - 2⁹ = 7133948369 is a prime.

It is a super-2 number, since 2×7133948881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7133948821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40078276 + ... + 40078453.

It is an arithmetic number, because the mean of its divisors is an integer number (1803526425).

Almost surely, 2^7133948881 is an apocalyptic number.

It is an amenable number.

7133948881 is a deficient number, since it is larger than the sum of its proper divisors (80156819).

7133948881 is an equidigital number, since it uses as much as digits as its factorization.

7133948881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80156818.

The product of its digits is 1161216, while the sum is 52.

The square root of 7133948881 is about 84462.7070428127. The cubic root of 7133948881 is about 1925.0558374538.

The spelling of 7133948881 in words is "seven billion, one hundred thirty-three million, nine hundred forty-eight thousand, eight hundred eighty-one".