2452721959817 has 2 divisors, whose sum is σ = 2452721959818. Its totient is φ = 2452721959816.

The previous prime is 2452721959733. The next prime is 2452721960009. The reversal of 2452721959817 is 7189591272542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2059328321296 + 393393638521 = 1435036^2 + 627211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2452721959817 - 2¹² = 2452721955721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2452721959817.

It is not a weakly prime, because it can be changed into another prime (2452721952817) 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, 1226360979908 + 1226360979909.

It is an arithmetic number, because the mean of its divisors is an integer number (1226360979909).

Almost surely, 2^{2452721959817} is an apocalyptic number.

It is an amenable number.

2452721959817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2452721959817 is an equidigital number, since it uses as much as digits as its factorization.

2452721959817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 62.

The spelling of 2452721959817 in words is "two trillion, four hundred fifty-two billion, seven hundred twenty-one million, nine hundred fifty-nine thousand, eight hundred seventeen".