128575235088865 has 16 divisors (see below), whose sum is σ = 155074808448000. Its totient is φ = 102337812654912.

The previous prime is 128575235088847. The next prime is 128575235088869. The reversal of 128575235088865 is 568880532575821.

It is a cyclic number.

It is not a de Polignac number, because 128575235088865 - 2⁴³ = 119779142066657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128575235088869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38531377 + ... + 41735086.

It is an arithmetic number, because the mean of its divisors is an integer number (9692175528000).

Almost surely, 2^{128575235088865} is an apocalyptic number.

It is an amenable number.

128575235088865 is a deficient number, since it is larger than the sum of its proper divisors (26499573359135).

128575235088865 is a wasteful number, since it uses less digits than its factorization.

128575235088865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80268096.

The product of its (nonzero) digits is 1290240000, while the sum is 73.

The spelling of 128575235088865 in words is "one hundred twenty-eight trillion, five hundred seventy-five billion, two hundred thirty-five million, eighty-eight thousand, eight hundred sixty-five".