20364563133919 has 2 divisors, whose sum is σ = 20364563133920. Its totient is φ = 20364563133918.

The previous prime is 20364563133917. The next prime is 20364563134001. The reversal of 20364563133919 is 91933136546302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20364563133919 - 2¹ = 20364563133917 is a prime.

It is a super-2 number, since 2×20364563133919² (a number of 27 digits) contains 22 as substring.

Together with 20364563133917, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20364563133919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20364563133911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10182281566959 + 10182281566960.

It is an arithmetic number, because the mean of its divisors is an integer number (10182281566960).

Almost surely, 2^{20364563133919} is an apocalyptic number.

20364563133919 is a deficient number, since it is larger than the sum of its proper divisors (1).

20364563133919 is an equidigital number, since it uses as much as digits as its factorization.

20364563133919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9447840, while the sum is 55.

The spelling of 20364563133919 in words is "twenty trillion, three hundred sixty-four billion, five hundred sixty-three million, one hundred thirty-three thousand, nine hundred nineteen".