8171139960 has 96 divisors (see below), whose sum is σ = 27412894080. Its totient is φ = 2108678400.

The previous prime is 8171139941. The next prime is 8171139967. The reversal of 8171139960 is 699311718.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8171139967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354931 + ... + 377250.

It is an arithmetic number, because the mean of its divisors is an integer number (285550980).

Almost surely, 2^8171139960 is an apocalyptic number.

It is an amenable number.

8171139960 is an abundant number, since it is smaller than the sum of its proper divisors (19241754120).

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

8171139960 is a wasteful number, since it uses less digits than its factorization.

8171139960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732229 (or 732222 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 8171139960 is about 90394.3580097785. The cubic root of 8171139960 is about 2014.1611574880.

The spelling of 8171139960 in words is "eight billion, one hundred seventy-one million, one hundred thirty-nine thousand, nine hundred sixty".