2215880320249 has 2 divisors, whose sum is σ = 2215880320250. Its totient is φ = 2215880320248.

The previous prime is 2215880320193. The next prime is 2215880320273. The reversal of 2215880320249 is 9420230885122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1971875935225 + 244004385024 = 1404235^2 + 493968^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2215880320249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2215880320199 and 2215880320208.

It is not a weakly prime, because it can be changed into another prime (2215884320249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107940160124 + 1107940160125.

It is an arithmetic number, because the mean of its divisors is an integer number (1107940160125).

Almost surely, 2^{2215880320249} is an apocalyptic number.

It is an amenable number.

2215880320249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215880320249 is an equidigital number, since it uses as much as digits as its factorization.

2215880320249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 2215880320249 in words is "two trillion, two hundred fifteen billion, eight hundred eighty million, three hundred twenty thousand, two hundred forty-nine".