36166623109 has 2 divisors, whose sum is σ = 36166623110. Its totient is φ = 36166623108.

The previous prime is 36166623107. The next prime is 36166623151. The reversal of 36166623109 is 90132666163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31637736900 + 4528886209 = 177870^2 + 67297^2 .

It is a cyclic number.

It is not a de Polignac number, because 36166623109 - 2¹ = 36166623107 is a prime.

Together with 36166623107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36166623107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18083311554 + 18083311555.

It is an arithmetic number, because the mean of its divisors is an integer number (18083311555).

Almost surely, 2^36166623109 is an apocalyptic number.

It is an amenable number.

36166623109 is a deficient number, since it is larger than the sum of its proper divisors (1).

36166623109 is an equidigital number, since it uses as much as digits as its factorization.

36166623109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 36166623109 in words is "thirty-six billion, one hundred sixty-six million, six hundred twenty-three thousand, one hundred nine".