16618291201 has 2 divisors, whose sum is σ = 16618291202. Its totient is φ = 16618291200.

The previous prime is 16618291181. The next prime is 16618291211. The reversal of 16618291201 is 10219281661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9758476225 + 6859814976 = 98785^2 + 82824^2 .

It is a cyclic number.

It is not a de Polignac number, because 16618291201 - 2²⁵ = 16584736769 is a prime.

It is not a weakly prime, because it can be changed into another prime (16618291211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8309145600 + 8309145601.

It is an arithmetic number, because the mean of its divisors is an integer number (8309145601).

Almost surely, 2^16618291201 is an apocalyptic number.

It is an amenable number.

16618291201 is a deficient number, since it is larger than the sum of its proper divisors (1).

16618291201 is an equidigital number, since it uses as much as digits as its factorization.

16618291201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 16618291201 in words is "sixteen billion, six hundred eighteen million, two hundred ninety-one thousand, two hundred one".