2445673214821 has 2 divisors, whose sum is σ = 2445673214822. Its totient is φ = 2445673214820.

The previous prime is 2445673214791. The next prime is 2445673214827. The reversal of 2445673214821 is 1284123765442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2423221488900 + 22451725921 = 1556670^2 + 149839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2445673214821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2445673214827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222836607410 + 1222836607411.

It is an arithmetic number, because the mean of its divisors is an integer number (1222836607411).

Almost surely, 2^{2445673214821} is an apocalyptic number.

It is an amenable number.

2445673214821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445673214821 is an equidigital number, since it uses as much as digits as its factorization.

2445673214821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 49.

The spelling of 2445673214821 in words is "two trillion, four hundred forty-five billion, six hundred seventy-three million, two hundred fourteen thousand, eight hundred twenty-one".