8111573121 has 8 divisors (see below), whose sum is σ = 10817004544. Its totient is φ = 5406928560.

The previous prime is 8111573083. The next prime is 8111573153. The reversal of 8111573121 is 1213751118.

8111573121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8111573121 - 2⁷ = 8111572993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8111573021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172225 + ... + 214206.

It is an arithmetic number, because the mean of its divisors is an integer number (1352125568).

Almost surely, 2^8111573121 is an apocalyptic number.

It is an amenable number.

8111573121 is a deficient number, since it is larger than the sum of its proper divisors (2705431423).

8111573121 is a wasteful number, since it uses less digits than its factorization.

8111573121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393431.

The product of its digits is 1680, while the sum is 30.

The square root of 8111573121 is about 90064.2721671585. The cubic root of 8111573121 is about 2009.2548677363.

The spelling of 8111573121 in words is "eight billion, one hundred eleven million, five hundred seventy-three thousand, one hundred twenty-one".