128577520805241 has 16 divisors (see below), whose sum is σ = 172293657338880. Its totient is φ = 85290642679440.

The previous prime is 128577520805183. The next prime is 128577520805341. The reversal of 128577520805241 is 142508025775821.

It is a happy number.

It is not a de Polignac number, because 128577520805241 - 2⁷ = 128577520805113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128577520805341) 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, 96455215 + ... + 97779156.

It is an arithmetic number, because the mean of its divisors is an integer number (10768353583680).

Almost surely, 2^{128577520805241} is an apocalyptic number.

It is an amenable number.

128577520805241 is a deficient number, since it is larger than the sum of its proper divisors (43716136533639).

128577520805241 is a wasteful number, since it uses less digits than its factorization.

128577520805241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194235476.

The product of its (nonzero) digits is 12544000, while the sum is 57.

The spelling of 128577520805241 in words is "one hundred twenty-eight trillion, five hundred seventy-seven billion, five hundred twenty million, eight hundred five thousand, two hundred forty-one".