20011771303177 has 2 divisors, whose sum is σ = 20011771303178. Its totient is φ = 20011771303176.

The previous prime is 20011771303061. The next prime is 20011771303207. The reversal of 20011771303177 is 77130317711002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18106973842441 + 1904797460736 = 4255229^2 + 1380144^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011771303177 - 2¹¹ = 20011771301129 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011771303477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005885651588 + 10005885651589.

It is an arithmetic number, because the mean of its divisors is an integer number (10005885651589).

Almost surely, 2^{20011771303177} is an apocalyptic number.

It is an amenable number.

20011771303177 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011771303177 is an equidigital number, since it uses as much as digits as its factorization.

20011771303177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43218, while the sum is 40.

The spelling of 20011771303177 in words is "twenty trillion, eleven billion, seven hundred seventy-one million, three hundred three thousand, one hundred seventy-seven".