128888758535857 has 4 divisors (see below), whose sum is σ = 128907816469360. Its totient is φ = 128869700602356.

The previous prime is 128888758535813. The next prime is 128888758535891. The reversal of 128888758535857 is 758535857888821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128888758535857 - 2¹¹ = 128888758533809 is a prime.

It is a super-2 number, since 2×128888758535857² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128888758935857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9528956607 + ... + 9528970132.

It is an arithmetic number, because the mean of its divisors is an integer number (32226954117340).

Almost surely, 2^{128888758535857} is an apocalyptic number.

It is an amenable number.

128888758535857 is a deficient number, since it is larger than the sum of its proper divisors (19057933503).

128888758535857 is an equidigital number, since it uses as much as digits as its factorization.

128888758535857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19057933502.

The product of its digits is 48168960000, while the sum is 88.

The spelling of 128888758535857 in words is "one hundred twenty-eight trillion, eight hundred eighty-eight billion, seven hundred fifty-eight million, five hundred thirty-five thousand, eight hundred fifty-seven".