2445678765449 has 2 divisors, whose sum is σ = 2445678765450. Its totient is φ = 2445678765448.

The previous prime is 2445678765433. The next prime is 2445678765479. The reversal of 2445678765449 is 9445678765442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2206318095424 + 239360670025 = 1485368^2 + 489245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2445678765449 - 2⁴ = 2445678765433 is a prime.

It is not a weakly prime, because it can be changed into another prime (2445678765479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222839382724 + 1222839382725.

It is an arithmetic number, because the mean of its divisors is an integer number (1222839382725).

Almost surely, 2^{2445678765449} is an apocalyptic number.

It is an amenable number.

2445678765449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445678765449 is an equidigital number, since it uses as much as digits as its factorization.

2445678765449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1625702400, while the sum is 71.

The spelling of 2445678765449 in words is "two trillion, four hundred forty-five billion, six hundred seventy-eight million, seven hundred sixty-five thousand, four hundred forty-nine".