128954256968382 has 16 divisors (see below), whose sum is σ = 257908967794560. Its totient is φ = 42984676679832.

The previous prime is 128954256968377. The next prime is 128954256968413. The reversal of 128954256968382 is 283869652459821.

It is a junction number, because it is equal to n+sod(n) for n = 128954256968298 and 128954256968307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15159832 + ... + 22084587.

It is an arithmetic number, because the mean of its divisors is an integer number (16119310487160).

Almost surely, 2^{128954256968382} is an apocalyptic number.

128954256968382 is an abundant number, since it is smaller than the sum of its proper divisors (128954710826178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128954256968382 is a wasteful number, since it uses less digits than its factorization.

128954256968382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37821487.

The product of its digits is 3583180800, while the sum is 78.

The spelling of 128954256968382 in words is "one hundred twenty-eight trillion, nine hundred fifty-four billion, two hundred fifty-six million, nine hundred sixty-eight thousand, three hundred eighty-two".