16667033081 has 2 divisors, whose sum is σ = 16667033082. Its totient is φ = 16667033080.

The previous prime is 16667033077. The next prime is 16667033083. The reversal of 16667033081 is 18033076661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9547048681 + 7119984400 = 97709^2 + 84380^2 .

It is a cyclic number.

It is not a de Polignac number, because 16667033081 - 2² = 16667033077 is a prime.

It is a super-2 number, since 2×16667033081² (a number of 21 digits) contains 22 as substring.

Together with 16667033083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16667033083) 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, 8333516540 + 8333516541.

It is an arithmetic number, because the mean of its divisors is an integer number (8333516541).

Almost surely, 2^16667033081 is an apocalyptic number.

It is an amenable number.

16667033081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16667033081 is an equidigital number, since it uses as much as digits as its factorization.

16667033081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The spelling of 16667033081 in words is "sixteen billion, six hundred sixty-seven million, thirty-three thousand, eighty-one".