2520444617491 has 2 divisors, whose sum is σ = 2520444617492. Its totient is φ = 2520444617490.

The previous prime is 2520444617447. The next prime is 2520444617507. The reversal of 2520444617491 is 1947164440252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2520444617491 - 2¹⁹ = 2520444093203 is a prime.

It is not a weakly prime, because it can be changed into another prime (2520444617191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260222308745 + 1260222308746.

It is an arithmetic number, because the mean of its divisors is an integer number (1260222308746).

Almost surely, 2^{2520444617491} is an apocalyptic number.

2520444617491 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520444617491 is an equidigital number, since it uses as much as digits as its factorization.

2520444617491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 2520444617491 in words is "two trillion, five hundred twenty billion, four hundred forty-four million, six hundred seventeen thousand, four hundred ninety-one".