20064662600077 has 2 divisors, whose sum is σ = 20064662600078. Its totient is φ = 20064662600076.

The previous prime is 20064662600027. The next prime is 20064662600111. The reversal of 20064662600077 is 77000626646002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18257751322281 + 1806911277796 = 4272909^2 + 1344214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20064662600077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20064662600027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10032331300038 + 10032331300039.

It is an arithmetic number, because the mean of its divisors is an integer number (10032331300039).

Almost surely, 2^{20064662600077} is an apocalyptic number.

It is an amenable number.

20064662600077 is a deficient number, since it is larger than the sum of its proper divisors (1).

20064662600077 is an equidigital number, since it uses as much as digits as its factorization.

20064662600077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 20064662600077 in words is "twenty trillion, sixty-four billion, six hundred sixty-two million, six hundred thousand, seventy-seven".