7120512081 has 6 divisors (see below), whose sum is σ = 10285184130. Its totient is φ = 4747008048.

The previous prime is 7120512041. The next prime is 7120512097. The reversal of 7120512081 is 1802150217.

7120512081 is a `hidden beast` number, since 71 + 2 + 0 + 512 + 0 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5503265856 + 1617246225 = 74184^2 + 40215^2 .

It is not a de Polignac number, because 7120512081 - 2¹⁸ = 7120249937 is a prime.

It is a super-2 number, since 2×7120512081² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7120512041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395583996 + ... + 395584013.

It is an arithmetic number, because the mean of its divisors is an integer number (1714197355).

Almost surely, 2^7120512081 is an apocalyptic number.

It is an amenable number.

7120512081 is a deficient number, since it is larger than the sum of its proper divisors (3164672049).

7120512081 is a wasteful number, since it uses less digits than its factorization.

7120512081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791168015 (or 791168012 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 7120512081 is about 84383.1267552939. The cubic root of 7120512081 is about 1923.8464629713.

Adding to 7120512081 its reverse (1802150217), we get a palindrome (8922662298).

The spelling of 7120512081 in words is "seven billion, one hundred twenty million, five hundred twelve thousand, eighty-one".