128801561061 has 8 divisors (see below), whose sum is σ = 174550749664. Its totient is φ = 84460039920.

The previous prime is 128801561047. The next prime is 128801561153. The reversal of 128801561061 is 160165108821.

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

It is not a de Polignac number, because 128801561061 - 2⁵ = 128801561029 is a prime.

It is a super-2 number, since 2×128801561061² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128801561461) 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, 351916651 + ... + 351917016.

It is an arithmetic number, because the mean of its divisors is an integer number (21818843708).

Almost surely, 2^128801561061 is an apocalyptic number.

It is an amenable number.

128801561061 is a deficient number, since it is larger than the sum of its proper divisors (45749188603).

128801561061 is an equidigital number, since it uses as much as digits as its factorization.

128801561061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703833731.

The product of its (nonzero) digits is 23040, while the sum is 39.

Adding to 128801561061 its reverse (160165108821), we get a palindrome (288966669882).

The spelling of 128801561061 in words is "one hundred twenty-eight billion, eight hundred one million, five hundred sixty-one thousand, sixty-one".