2164515332249 has 2 divisors, whose sum is σ = 2164515332250. Its totient is φ = 2164515332248.

The previous prime is 2164515332227. The next prime is 2164515332407. The reversal of 2164515332249 is 9422335154612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2010100128400 + 154415203849 = 1417780^2 + 392957^2 .

It is a cyclic number.

It is not a de Polignac number, because 2164515332249 - 2²⁸ = 2164246896793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2164515332849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082257666124 + 1082257666125.

It is an arithmetic number, because the mean of its divisors is an integer number (1082257666125).

Almost surely, 2^{2164515332249} is an apocalyptic number.

It is an amenable number.

2164515332249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164515332249 is an equidigital number, since it uses as much as digits as its factorization.

2164515332249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1555200, while the sum is 47.

The spelling of 2164515332249 in words is "two trillion, one hundred sixty-four billion, five hundred fifteen million, three hundred thirty-two thousand, two hundred forty-nine".