20330111357 has 2 divisors, whose sum is σ = 20330111358. Its totient is φ = 20330111356.

The previous prime is 20330111323. The next prime is 20330111377. The reversal of 20330111357 is 75311103302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18796135801 + 1533975556 = 137099^2 + 39166^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330111357 - 2⁸ = 20330111101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20330111377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165055678 + 10165055679.

It is an arithmetic number, because the mean of its divisors is an integer number (10165055679).

Almost surely, 2^20330111357 is an apocalyptic number.

It is an amenable number.

20330111357 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330111357 is an equidigital number, since it uses as much as digits as its factorization.

20330111357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

Adding to 20330111357 its reverse (75311103302), we get a palindrome (95641214659).

The spelling of 20330111357 in words is "twenty billion, three hundred thirty million, one hundred eleven thousand, three hundred fifty-seven".