2128134087726 has 8 divisors (see below), whose sum is σ = 4256268175464. Its totient is φ = 709378029240.

The previous prime is 2128134087719. The next prime is 2128134087727. The reversal of 2128134087726 is 6277804318212.

It is a happy number.

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

2128134087726 is an admirable number.

It is a super-3 number, since 3×2128134087726³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128134087727) 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, 177344507305 + ... + 177344507316.

It is an arithmetic number, because the mean of its divisors is an integer number (532033521933).

Almost surely, 2^{2128134087726} is an apocalyptic number.

2128134087726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2128134087726 is a wasteful number, since it uses less digits than its factorization.

2128134087726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354689014626.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The spelling of 2128134087726 in words is "two trillion, one hundred twenty-eight billion, one hundred thirty-four million, eighty-seven thousand, seven hundred twenty-six".