20066758277 has 2 divisors, whose sum is σ = 20066758278. Its totient is φ = 20066758276.

The previous prime is 20066758199. The next prime is 20066758339. The reversal of 20066758277 is 77285766002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14210070436 + 5856687841 = 119206^2 + 76529^2 .

It is a cyclic number.

It is not a de Polignac number, because 20066758277 - 2¹⁶ = 20066692741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20066751277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10033379138 + 10033379139.

It is an arithmetic number, because the mean of its divisors is an integer number (10033379139).

Almost surely, 2^20066758277 is an apocalyptic number.

It is an amenable number.

20066758277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20066758277 is an equidigital number, since it uses as much as digits as its factorization.

20066758277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 20066758277 in words is "twenty billion, sixty-six million, seven hundred fifty-eight thousand, two hundred seventy-seven".