7157172811 has 4 divisors (see below), whose sum is σ = 7350609952. Its totient is φ = 6963735672.

The previous prime is 7157172809. The next prime is 7157172829. The reversal of 7157172811 is 1182717517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1182717517 = 1949 ⋅606833.

It is a cyclic number.

It is not a de Polignac number, because 7157172811 - 2¹ = 7157172809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7157172851) 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 3 ways as a sum of consecutive naturals, for example, 96718515 + ... + 96718588.

It is an arithmetic number, because the mean of its divisors is an integer number (1837652488).

Almost surely, 2^7157172811 is an apocalyptic number.

7157172811 is a deficient number, since it is larger than the sum of its proper divisors (193437141).

7157172811 is a wasteful number, since it uses less digits than its factorization.

7157172811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193437140.

The product of its digits is 27440, while the sum is 40.

The square root of 7157172811 is about 84600.0757150961. The cubic root of 7157172811 is about 1927.1425235566.

The spelling of 7157172811 in words is "seven billion, one hundred fifty-seven million, one hundred seventy-two thousand, eight hundred eleven".