128063715442575 has 144 divisors (see below), whose sum is σ = 246354390226560. Its totient is φ = 58556211436800.

The previous prime is 128063715442549. The next prime is 128063715442709. The reversal of 128063715442575 is 575244517360821.

It is a Cunningham number, because it is equal to 11316524²-1.

It is not a de Polignac number, because 128063715442575 - 2⁵ = 128063715442543 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5658264 + ... + 16974786.

Almost surely, 2^{128063715442575} is an apocalyptic number.

128063715442575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128063715442575 is a deficient number, since it is larger than the sum of its proper divisors (118290674783985).

128063715442575 is a wasteful number, since it uses less digits than its factorization.

128063715442575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11316630 (or 11316614 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 60.

The spelling of 128063715442575 in words is "one hundred twenty-eight trillion, sixty-three billion, seven hundred fifteen million, four hundred forty-two thousand, five hundred seventy-five".