2172416223277 has 2 divisors, whose sum is σ = 2172416223278. Its totient is φ = 2172416223276.

The previous prime is 2172416223193. The next prime is 2172416223347. The reversal of 2172416223277 is 7723226142712.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1975764773161 + 196651450116 = 1405619^2 + 443454^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172416223277 - 2¹¹ = 2172416221229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172416023277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086208111638 + 1086208111639.

It is an arithmetic number, because the mean of its divisors is an integer number (1086208111639).

Almost surely, 2^{2172416223277} is an apocalyptic number.

It is an amenable number.

2172416223277 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172416223277 is an equidigital number, since it uses as much as digits as its factorization.

2172416223277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 46.

The spelling of 2172416223277 in words is "two trillion, one hundred seventy-two billion, four hundred sixteen million, two hundred twenty-three thousand, two hundred seventy-seven".