128201570717 has 4 divisors (see below), whose sum is σ = 139856258976. Its totient is φ = 116546882460.

The previous prime is 128201570713. The next prime is 128201570719. The reversal of 128201570717 is 717075102821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128201570717 - 2² = 128201570713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128201570713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5827344113 + ... + 5827344134.

It is an arithmetic number, because the mean of its divisors is an integer number (34964064744).

Almost surely, 2^128201570717 is an apocalyptic number.

It is an amenable number.

128201570717 is a deficient number, since it is larger than the sum of its proper divisors (11654688259).

128201570717 is a wasteful number, since it uses less digits than its factorization.

128201570717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11654688258.

The product of its (nonzero) digits is 54880, while the sum is 41.

The spelling of 128201570717 in words is "one hundred twenty-eight billion, two hundred one million, five hundred seventy thousand, seven hundred seventeen".