128725368801 has 8 divisors (see below), whose sum is σ = 172345999584. Its totient is φ = 85460825280.

The previous prime is 128725368799. The next prime is 128725368859. The reversal of 128725368801 is 108863527821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128725368801 - 2¹ = 128725368799 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (128725368001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89020971 + ... + 89022416.

It is an arithmetic number, because the mean of its divisors is an integer number (21543249948).

Almost surely, 2^128725368801 is an apocalyptic number.

It is an amenable number.

128725368801 is a deficient number, since it is larger than the sum of its proper divisors (43620630783).

128725368801 is a wasteful number, since it uses less digits than its factorization.

128725368801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178043631.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 128725368801 in words is "one hundred twenty-eight billion, seven hundred twenty-five million, three hundred sixty-eight thousand, eight hundred one".