36268968209 has 2 divisors, whose sum is σ = 36268968210. Its totient is φ = 36268968208.

The previous prime is 36268968179. The next prime is 36268968247. The reversal of 36268968209 is 90286986263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34837102609 + 1431865600 = 186647^2 + 37840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36268968209 is a prime.

It is not a weakly prime, because it can be changed into another prime (36268908209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18134484104 + 18134484105.

It is an arithmetic number, because the mean of its divisors is an integer number (18134484105).

Almost surely, 2^36268968209 is an apocalyptic number.

It is an amenable number.

36268968209 is a deficient number, since it is larger than the sum of its proper divisors (1).

36268968209 is an equidigital number, since it uses as much as digits as its factorization.

36268968209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 36268968209 in words is "thirty-six billion, two hundred sixty-eight million, nine hundred sixty-eight thousand, two hundred nine".