128633425449967 has 2 divisors, whose sum is σ = 128633425449968. Its totient is φ = 128633425449966.

The previous prime is 128633425449961. The next prime is 128633425450021. The reversal of 128633425449967 is 769944524336821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128633425449967 - 2⁷ = 128633425449839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128633425449967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128633425449961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64316712724983 + 64316712724984.

It is an arithmetic number, because the mean of its divisors is an integer number (64316712724984).

Almost surely, 2^{128633425449967} is an apocalyptic number.

128633425449967 is a deficient number, since it is larger than the sum of its proper divisors (1).

128633425449967 is an equidigital number, since it uses as much as digits as its factorization.

128633425449967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1881169920, while the sum is 73.

The spelling of 128633425449967 in words is "one hundred twenty-eight trillion, six hundred thirty-three billion, four hundred twenty-five million, four hundred forty-nine thousand, nine hundred sixty-seven".