2445543052021 has 2 divisors, whose sum is σ = 2445543052022. Its totient is φ = 2445543052020.

The previous prime is 2445543051827. The next prime is 2445543052037. The reversal of 2445543052021 is 1202503455442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2249550022500 + 195993029521 = 1499850^2 + 442711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2445543052021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2445543052721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222771526010 + 1222771526011.

It is an arithmetic number, because the mean of its divisors is an integer number (1222771526011).

Almost surely, 2^{2445543052021} is an apocalyptic number.

It is an amenable number.

2445543052021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445543052021 is an equidigital number, since it uses as much as digits as its factorization.

2445543052021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 2445543052021 in words is "two trillion, four hundred forty-five billion, five hundred forty-three million, fifty-two thousand, twenty-one".