77728670733067 has 2 divisors, whose sum is σ = 77728670733068. Its totient is φ = 77728670733066.

The previous prime is 77728670733023. The next prime is 77728670733079. The reversal of 77728670733067 is 76033707682777.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77728670733067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77728670732987 and 77728670733005.

It is not a weakly prime, because it can be changed into another prime (77728670703067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38864335366533 + 38864335366534.

It is an arithmetic number, because the mean of its divisors is an integer number (38864335366534).

Almost surely, 2^{77728670733067} is an apocalyptic number.

77728670733067 is a deficient number, since it is larger than the sum of its proper divisors (1).

77728670733067 is an equidigital number, since it uses as much as digits as its factorization.

77728670733067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 609892416, while the sum is 70.

The spelling of 77728670733067 in words is "seventy-seven trillion, seven hundred twenty-eight billion, six hundred seventy million, seven hundred thirty-three thousand, sixty-seven".