20418364033 has 2 divisors, whose sum is σ = 20418364034. Its totient is φ = 20418364032.

The previous prime is 20418363997. The next prime is 20418364061. The reversal of 20418364033 is 33046381402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20416694769 + 1669264 = 142887^2 + 1292^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20418364033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20418364033.

It is not a weakly prime, because it can be changed into another prime (20418364093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10209182016 + 10209182017.

It is an arithmetic number, because the mean of its divisors is an integer number (10209182017).

Almost surely, 2^20418364033 is an apocalyptic number.

It is an amenable number.

20418364033 is a deficient number, since it is larger than the sum of its proper divisors (1).

20418364033 is an equidigital number, since it uses as much as digits as its factorization.

20418364033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 20418364033 in words is "twenty billion, four hundred eighteen million, three hundred sixty-four thousand, thirty-three".