20333034677 has 2 divisors, whose sum is σ = 20333034678. Its totient is φ = 20333034676.

The previous prime is 20333034629. The next prime is 20333034679. The reversal of 20333034677 is 77643033302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17293828036 + 3039206641 = 131506^2 + 55129^2 .

It is a cyclic number.

It is not a de Polignac number, because 20333034677 - 2¹⁸ = 20332772533 is a prime.

Together with 20333034679, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20333034677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20333034679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166517338 + 10166517339.

It is an arithmetic number, because the mean of its divisors is an integer number (10166517339).

Almost surely, 2^20333034677 is an apocalyptic number.

It is an amenable number.

20333034677 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333034677 is an equidigital number, since it uses as much as digits as its factorization.

20333034677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 38.

Adding to 20333034677 its reverse (77643033302), we get a palindrome (97976067979).

The spelling of 20333034677 in words is "twenty billion, three hundred thirty-three million, thirty-four thousand, six hundred seventy-seven".