8081173140 has 48 divisors (see below), whose sum is σ = 22945991040. Its totient is φ = 2124626560.

The previous prime is 8081173129. The next prime is 8081173141. The reversal of 8081173140 is 413711808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081173141) 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, 944235 + ... + 952754.

It is an arithmetic number, because the mean of its divisors is an integer number (478041480).

Almost surely, 2^8081173140 is an apocalyptic number.

It is an amenable number.

8081173140 is an abundant number, since it is smaller than the sum of its proper divisors (14864817900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8081173140 is a wasteful number, since it uses less digits than its factorization.

8081173140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897072 (or 1897070 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 8081173140 is about 89895.3454857369. The cubic root of 8081173140 is about 2006.7416776901.

Adding to 8081173140 its reverse (413711808), we get a palindrome (8494884948).

The spelling of 8081173140 in words is "eight billion, eighty-one million, one hundred seventy-three thousand, one hundred forty".