128764336667 has 2 divisors, whose sum is σ = 128764336668. Its totient is φ = 128764336666.

The previous prime is 128764336621. The next prime is 128764336709. The reversal of 128764336667 is 766633467821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128764336667 - 2²² = 128760142363 is a prime.

It is not a weakly prime, because it can be changed into another prime (128764336367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64382168333 + 64382168334.

It is an arithmetic number, because the mean of its divisors is an integer number (64382168334).

Almost surely, 2^128764336667 is an apocalyptic number.

128764336667 is a deficient number, since it is larger than the sum of its proper divisors (1).

128764336667 is an equidigital number, since it uses as much as digits as its factorization.

128764336667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 59.

The spelling of 128764336667 in words is "one hundred twenty-eight billion, seven hundred sixty-four million, three hundred thirty-six thousand, six hundred sixty-seven".