2128631601 has 16 divisors (see below), whose sum is σ = 2909407680. Its totient is φ = 1383909120.

The previous prime is 2128631597. The next prime is 2128631651. The reversal of 2128631601 is 1061368212.

It is not a de Polignac number, because 2128631601 - 2² = 2128631597 is a prime.

It is a super-3 number, since 3×2128631601³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2128631651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35115 + ... + 74096.

It is an arithmetic number, because the mean of its divisors is an integer number (181837980).

Almost surely, 2^2128631601 is an apocalyptic number.

It is an amenable number.

2128631601 is a deficient number, since it is larger than the sum of its proper divisors (780776079).

2128631601 is a wasteful number, since it uses less digits than its factorization.

2128631601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109376.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2128631601 is about 46137.0957148367. The cubic root of 2128631601 is about 1286.3727603803.

Adding to 2128631601 its reverse (1061368212), we get a palindrome (3189999813).

The spelling of 2128631601 in words is "two billion, one hundred twenty-eight million, six hundred thirty-one thousand, six hundred one".