7215161233 has 16 divisors (see below), whose sum is σ = 8750903040. Its totient is φ = 5807333376.

The previous prime is 7215161207. The next prime is 7215161257. The reversal of 7215161233 is 3321615127.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7215161233 - 2⁹ = 7215160721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7215161195 and 7215161204.

It is not an unprimeable number, because it can be changed into a prime (7215161273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16816 + ... + 121297.

It is an arithmetic number, because the mean of its divisors is an integer number (546931440).

Almost surely, 2^7215161233 is an apocalyptic number.

It is an amenable number.

7215161233 is a deficient number, since it is larger than the sum of its proper divisors (1535741807).

7215161233 is a wasteful number, since it uses less digits than its factorization.

7215161233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138576.

The product of its digits is 7560, while the sum is 31.

The square root of 7215161233 is about 84942.1051834719. The cubic root of 7215161233 is about 1932.3331902272. Note that the first 3 decimals are identical.

The spelling of 7215161233 in words is "seven billion, two hundred fifteen million, one hundred sixty-one thousand, two hundred thirty-three".