20182638365833 has 2 divisors, whose sum is σ = 20182638365834. Its totient is φ = 20182638365832.

The previous prime is 20182638365807. The next prime is 20182638365881. The reversal of 20182638365833 is 33856383628102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18641643854409 + 1540994511424 = 4317597^2 + 1241368^2 .

It is a cyclic number.

It is not a de Polignac number, because 20182638365833 - 2⁴¹ = 17983615110281 is a prime.

It is not a weakly prime, because it can be changed into another prime (20182638365893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10091319182916 + 10091319182917.

It is an arithmetic number, because the mean of its divisors is an integer number (10091319182917).

Almost surely, 2^{20182638365833} is an apocalyptic number.

It is an amenable number.

20182638365833 is a deficient number, since it is larger than the sum of its proper divisors (1).

20182638365833 is an equidigital number, since it uses as much as digits as its factorization.

20182638365833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 20182638365833 in words is "twenty trillion, one hundred eighty-two billion, six hundred thirty-eight million, three hundred sixty-five thousand, eight hundred thirty-three".