128880282001 has 3 divisors (see below), whose sum is σ = 128880641001. Its totient is φ = 128879923002.

The previous prime is 128880281963. The next prime is 128880282059. The reversal of 128880282001 is 100282088821.

The square root of 128880282001 is 358999.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 128880282001 - 2¹¹ = 128880279953 is a prime.

It is a super-2 number, since 2×128880282001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128880282061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 179500 + ... + 538498.

It is an arithmetic number, because the mean of its divisors is an integer number (42960213667).

Almost surely, 2^128880282001 is an apocalyptic number.

128880282001 is the 358999-th square number.

128880282001 is the 179500-th centered octagonal number.

It is an amenable number.

128880282001 is a deficient number, since it is larger than the sum of its proper divisors (359000).

128880282001 is an frugal number, since it uses more digits than its factorization.

128880282001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717998 (or 358999 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 40.

It can be divided in two parts, 128880 and 282001, that added together give a square (410881 = 641²).

The spelling of 128880282001 in words is "one hundred twenty-eight billion, eight hundred eighty million, two hundred eighty-two thousand, one".