128253168133535 has 16 divisors (see below), whose sum is σ = 163134286545600. Its totient is φ = 96462012796416.

The previous prime is 128253168133499. The next prime is 128253168133567. The reversal of 128253168133535 is 535331861352821.

It is not a de Polignac number, because 128253168133535 - 2¹⁰ = 128253168132511 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 820847240 + ... + 821003469.

It is an arithmetic number, because the mean of its divisors is an integer number (10195892909100).

Almost surely, 2^{128253168133535} is an apocalyptic number.

128253168133535 is a deficient number, since it is larger than the sum of its proper divisors (34881118412065).

128253168133535 is a wasteful number, since it uses less digits than its factorization.

128253168133535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641851650.

The product of its digits is 15552000, while the sum is 56.

The spelling of 128253168133535 in words is "one hundred twenty-eight trillion, two hundred fifty-three billion, one hundred sixty-eight million, one hundred thirty-three thousand, five hundred thirty-five".