2207772161 has 16 divisors (see below), whose sum is σ = 2538926208. Its totient is φ = 1880592000.

The previous prime is 2207772137. The next prime is 2207772169. The reversal of 2207772161 is 1612777022.

It is not a de Polignac number, because 2207772161 - 2¹⁴ = 2207755777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2207772169) 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, 1142366 + ... + 1144296.

It is an arithmetic number, because the mean of its divisors is an integer number (158682888).

Almost surely, 2^2207772161 is an apocalyptic number.

It is an amenable number.

2207772161 is a deficient number, since it is larger than the sum of its proper divisors (331154047).

2207772161 is a wasteful number, since it uses less digits than its factorization.

2207772161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 2207772161 is about 46986.9360673794. The cubic root of 2207772161 is about 1302.1212234828.

The spelling of 2207772161 in words is "two billion, two hundred seven million, seven hundred seventy-two thousand, one hundred sixty-one".