128967956323 has 2 divisors, whose sum is σ = 128967956324. Its totient is φ = 128967956322.

The previous prime is 128967956311. The next prime is 128967956353. The reversal of 128967956323 is 323659769821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128967956323 - 2²⁹ = 128431085411 is a prime.

It is not a weakly prime, because it can be changed into another prime (128967956353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64483978161 + 64483978162.

It is an arithmetic number, because the mean of its divisors is an integer number (64483978162).

Almost surely, 2^128967956323 is an apocalyptic number.

128967956323 is a deficient number, since it is larger than the sum of its proper divisors (1).

128967956323 is an equidigital number, since it uses as much as digits as its factorization.

128967956323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29393280, while the sum is 61.

The spelling of 128967956323 in words is "one hundred twenty-eight billion, nine hundred sixty-seven million, nine hundred fifty-six thousand, three hundred twenty-three".