20577648067 has 2 divisors, whose sum is σ = 20577648068. Its totient is φ = 20577648066.

The previous prime is 20577648061. The next prime is 20577648089. The reversal of 20577648067 is 76084677502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20577648067 - 2²⁷ = 20443430339 is a prime.

It is not a weakly prime, because it can be changed into another prime (20577648061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10288824033 + 10288824034.

It is an arithmetic number, because the mean of its divisors is an integer number (10288824034).

Almost surely, 2^20577648067 is an apocalyptic number.

20577648067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20577648067 is an equidigital number, since it uses as much as digits as its factorization.

20577648067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 20577648067 in words is "twenty billion, five hundred seventy-seven million, six hundred forty-eight thousand, sixty-seven".