16667601001 has 2 divisors, whose sum is σ = 16667601002. Its totient is φ = 16667601000.

The previous prime is 16667600993. The next prime is 16667601037. The reversal of 16667601001 is 10010676661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16262625625 + 404975376 = 127525^2 + 20124^2 .

It is a cyclic number.

It is not a de Polignac number, because 16667601001 - 2³ = 16667600993 is a prime.

It is not a weakly prime, because it can be changed into another prime (16667661001) 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, 8333800500 + 8333800501.

It is an arithmetic number, because the mean of its divisors is an integer number (8333800501).

Almost surely, 2^16667601001 is an apocalyptic number.

It is an amenable number.

16667601001 is a deficient number, since it is larger than the sum of its proper divisors (1).

16667601001 is an equidigital number, since it uses as much as digits as its factorization.

16667601001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 16667601001 in words is "sixteen billion, six hundred sixty-seven million, six hundred one thousand, one".