77738604566927 has 2 divisors, whose sum is σ = 77738604566928. Its totient is φ = 77738604566926.

The previous prime is 77738604566911. The next prime is 77738604566963. The reversal of 77738604566927 is 72966540683777.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77738604566927 - 2⁴ = 77738604566911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77738604566327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38869302283463 + 38869302283464.

It is an arithmetic number, because the mean of its divisors is an integer number (38869302283464).

Almost surely, 2^{77738604566927} is an apocalyptic number.

77738604566927 is a deficient number, since it is larger than the sum of its proper divisors (1).

77738604566927 is an equidigital number, since it uses as much as digits as its factorization.

77738604566927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480842240, while the sum is 77.

The spelling of 77738604566927 in words is "seventy-seven trillion, seven hundred thirty-eight billion, six hundred four million, five hundred sixty-six thousand, nine hundred twenty-seven".