20334312277 has 2 divisors, whose sum is σ = 20334312278. Its totient is φ = 20334312276.

The previous prime is 20334312247. The next prime is 20334312287. The reversal of 20334312277 is 77221343302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20129650641 + 204661636 = 141879^2 + 14306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20334312277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20334312247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167156138 + 10167156139.

It is an arithmetic number, because the mean of its divisors is an integer number (10167156139).

Almost surely, 2^20334312277 is an apocalyptic number.

It is an amenable number.

20334312277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20334312277 is an equidigital number, since it uses as much as digits as its factorization.

20334312277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 34.

Adding to 20334312277 its reverse (77221343302), we get a palindrome (97555655579).

The spelling of 20334312277 in words is "twenty billion, three hundred thirty-four million, three hundred twelve thousand, two hundred seventy-seven".