20011010177 has 2 divisors, whose sum is σ = 20011010178. Its totient is φ = 20011010176.

The previous prime is 20011010161. The next prime is 20011010189. The reversal of 20011010177 is 77101011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13754832961 + 6256177216 = 117281^2 + 79096^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011010177 - 2⁴ = 20011010161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011510177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005505088 + 10005505089.

It is an arithmetic number, because the mean of its divisors is an integer number (10005505089).

Almost surely, 2^20011010177 is an apocalyptic number.

It is an amenable number.

20011010177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011010177 is an equidigital number, since it uses as much as digits as its factorization.

20011010177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98, while the sum is 20.

Adding to 20011010177 its reverse (77101011002), we get a palindrome (97112021179).

The spelling of 20011010177 in words is "twenty billion, eleven million, ten thousand, one hundred seventy-seven".