16020454249 has 2 divisors, whose sum is σ = 16020454250. Its totient is φ = 16020454248.

The previous prime is 16020454231. The next prime is 16020454283. The reversal of 16020454249 is 94245402061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16012371600 + 8082649 = 126540^2 + 2843^2 .

It is a cyclic number.

It is not a de Polignac number, because 16020454249 - 2¹⁷ = 16020323177 is a prime.

It is not a weakly prime, because it can be changed into another prime (16020454049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8010227124 + 8010227125.

It is an arithmetic number, because the mean of its divisors is an integer number (8010227125).

Almost surely, 2^16020454249 is an apocalyptic number.

It is an amenable number.

16020454249 is a deficient number, since it is larger than the sum of its proper divisors (1).

16020454249 is an equidigital number, since it uses as much as digits as its factorization.

16020454249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 16020454249 in words is "sixteen billion, twenty million, four hundred fifty-four thousand, two hundred forty-nine".