16045663969 has 2 divisors, whose sum is σ = 16045663970. Its totient is φ = 16045663968.

The previous prime is 16045663939. The next prime is 16045664017. The reversal of 16045663969 is 96936654061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13067233344 + 2978430625 = 114312^2 + 54575^2 .

It is a cyclic number.

It is not a de Polignac number, because 16045663969 - 2¹³ = 16045655777 is a prime.

It is a super-2 number, since 2×16045663969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16045663939) 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, 8022831984 + 8022831985.

It is an arithmetic number, because the mean of its divisors is an integer number (8022831985).

Almost surely, 2^16045663969 is an apocalyptic number.

It is an amenable number.

16045663969 is a deficient number, since it is larger than the sum of its proper divisors (1).

16045663969 is an equidigital number, since it uses as much as digits as its factorization.

16045663969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 55.

The spelling of 16045663969 in words is "sixteen billion, forty-five million, six hundred sixty-three thousand, nine hundred sixty-nine".