128712595663 has 2 divisors, whose sum is σ = 128712595664. Its totient is φ = 128712595662.

The previous prime is 128712595631. The next prime is 128712595729. The reversal of 128712595663 is 366595217821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128712595663 - 2⁵ = 128712595631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128712595763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64356297831 + 64356297832.

It is an arithmetic number, because the mean of its divisors is an integer number (64356297832).

Almost surely, 2^128712595663 is an apocalyptic number.

128712595663 is a deficient number, since it is larger than the sum of its proper divisors (1).

128712595663 is an equidigital number, since it uses as much as digits as its factorization.

128712595663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5443200, while the sum is 55.

The spelling of 128712595663 in words is "one hundred twenty-eight billion, seven hundred twelve million, five hundred ninety-five thousand, six hundred sixty-three".