2620163121449 has 2 divisors, whose sum is σ = 2620163121450. Its totient is φ = 2620163121448.

The previous prime is 2620163121391. The next prime is 2620163121509. The reversal of 2620163121449 is 9441213610262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2214084480400 + 406078641049 = 1487980^2 + 637243^2 .

It is a cyclic number.

It is not a de Polignac number, because 2620163121449 - 2¹² = 2620163117353 is a prime.

It is not a weakly prime, because it can be changed into another prime (2620163151449) 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, 1310081560724 + 1310081560725.

It is an arithmetic number, because the mean of its divisors is an integer number (1310081560725).

Almost surely, 2^{2620163121449} is an apocalyptic number.

It is an amenable number.

2620163121449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620163121449 is an equidigital number, since it uses as much as digits as its factorization.

2620163121449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 2620163121449 in words is "two trillion, six hundred twenty billion, one hundred sixty-three million, one hundred twenty-one thousand, four hundred forty-nine".