18624470920441 has 2 divisors, whose sum is σ = 18624470920442. Its totient is φ = 18624470920440.

The previous prime is 18624470920421. The next prime is 18624470920553. The reversal of 18624470920441 is 14402907442681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12551183845225 + 6073287075216 = 3542765^2 + 2464404^2 .

It is an emirp because it is prime and its reverse (14402907442681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18624470920441 - 2¹⁹ = 18624470396153 is a prime.

It is not a weakly prime, because it can be changed into another prime (18624470920411) 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, 9312235460220 + 9312235460221.

It is an arithmetic number, because the mean of its divisors is an integer number (9312235460221).

Almost surely, 2^{18624470920441} is an apocalyptic number.

It is an amenable number.

18624470920441 is a deficient number, since it is larger than the sum of its proper divisors (1).

18624470920441 is an equidigital number, since it uses as much as digits as its factorization.

18624470920441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3096576, while the sum is 52.

The spelling of 18624470920441 in words is "eighteen trillion, six hundred twenty-four billion, four hundred seventy million, nine hundred twenty thousand, four hundred forty-one".