128015397967 has 2 divisors, whose sum is σ = 128015397968. Its totient is φ = 128015397966.

The previous prime is 128015397949. The next prime is 128015397989. The reversal of 128015397967 is 769793510821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128015397967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128015395967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64007698983 + 64007698984.

It is an arithmetic number, because the mean of its divisors is an integer number (64007698984).

Almost surely, 2^128015397967 is an apocalyptic number.

128015397967 is a deficient number, since it is larger than the sum of its proper divisors (1).

128015397967 is an equidigital number, since it uses as much as digits as its factorization.

128015397967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 58.

The spelling of 128015397967 in words is "one hundred twenty-eight billion, fifteen million, three hundred ninety-seven thousand, nine hundred sixty-seven".