2215215915449 has 2 divisors, whose sum is σ = 2215215915450. Its totient is φ = 2215215915448.

The previous prime is 2215215915413. The next prime is 2215215915461. The reversal of 2215215915449 is 9445195125122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1687123025449 + 528092890000 = 1298893^2 + 726700^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215215915449 - 2⁸ = 2215215915193 is a prime.

It is a super-2 number, since 2×2215215915449² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2215215915397 and 2215215915406.

It is not a weakly prime, because it can be changed into another prime (2215215905449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107607957724 + 1107607957725.

It is an arithmetic number, because the mean of its divisors is an integer number (1107607957725).

Almost surely, 2^{2215215915449} is an apocalyptic number.

It is an amenable number.

2215215915449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215215915449 is an equidigital number, since it uses as much as digits as its factorization.

2215215915449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296000, while the sum is 50.

The spelling of 2215215915449 in words is "two trillion, two hundred fifteen billion, two hundred fifteen million, nine hundred fifteen thousand, four hundred forty-nine".