128633425449968 has 40 divisors (see below), whose sum is σ = 251816607132720. Its totient is φ = 63648599869440.

The previous prime is 128633425449967. The next prime is 128633425450021. The reversal of 128633425449968 is 869944524336821.

It is a junction number, because it is equal to n+sod(n) for n = 128633425449895 and 128633425449904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128633425449961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16300658 + ... + 22868718.

It is an arithmetic number, because the mean of its divisors is an integer number (6295415178318).

Almost surely, 2^{128633425449968} is an apocalyptic number.

It is an amenable number.

128633425449968 is a deficient number, since it is larger than the sum of its proper divisors (123183181682752).

128633425449968 is a wasteful number, since it uses less digits than its factorization.

128633425449968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580785 (or 6580779 counting only the distinct ones).

The product of its digits is 2149908480, while the sum is 74.

The spelling of 128633425449968 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-eight".