20363103577 has 2 divisors, whose sum is σ = 20363103578. Its totient is φ = 20363103576.

The previous prime is 20363103499. The next prime is 20363103599. The reversal of 20363103577 is 77530136302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20087676361 + 275427216 = 141731^2 + 16596^2 .

It is a cyclic number.

It is not a de Polignac number, because 20363103577 - 2²⁷ = 20228885849 is a prime.

It is not a weakly prime, because it can be changed into another prime (20363103077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10181551788 + 10181551789.

It is an arithmetic number, because the mean of its divisors is an integer number (10181551789).

Almost surely, 2^20363103577 is an apocalyptic number.

It is an amenable number.

20363103577 is a deficient number, since it is larger than the sum of its proper divisors (1).

20363103577 is an equidigital number, since it uses as much as digits as its factorization.

20363103577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 37.

Adding to 20363103577 its reverse (77530136302), we get a palindrome (97893239879).

The spelling of 20363103577 in words is "twenty billion, three hundred sixty-three million, one hundred three thousand, five hundred seventy-seven".