16429333561 has 2 divisors, whose sum is σ = 16429333562. Its totient is φ = 16429333560.

The previous prime is 16429333559. The next prime is 16429333589. The reversal of 16429333561 is 16533392461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16299373561 + 129960000 = 127669^2 + 11400^2 .

It is a cyclic number.

It is not a de Polignac number, because 16429333561 - 2¹ = 16429333559 is a prime.

It is a super-3 number, since 3×16429333561³ (a number of 32 digits) contains 333 as substring.

Together with 16429333559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16429333861) 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, 8214666780 + 8214666781.

It is an arithmetic number, because the mean of its divisors is an integer number (8214666781).

Almost surely, 2^16429333561 is an apocalyptic number.

It is an amenable number.

16429333561 is a deficient number, since it is larger than the sum of its proper divisors (1).

16429333561 is an equidigital number, since it uses as much as digits as its factorization.

16429333561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 43.

The spelling of 16429333561 in words is "sixteen billion, four hundred twenty-nine million, three hundred thirty-three thousand, five hundred sixty-one".