2128692534009 has 4 divisors (see below), whose sum is σ = 2838256712016. Its totient is φ = 1419128356004.

The previous prime is 2128692533987. The next prime is 2128692534019. The reversal of 2128692534009 is 9004352968212.

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 2128692534009 - 2¹⁷ = 2128692402937 is a prime.

It is a super-2 number, since 2×2128692534009² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2128692534019) 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, 354782088999 + ... + 354782089004.

It is an arithmetic number, because the mean of its divisors is an integer number (709564178004).

Almost surely, 2^{2128692534009} is an apocalyptic number.

It is an amenable number.

2128692534009 is a deficient number, since it is larger than the sum of its proper divisors (709564178007).

2128692534009 is an equidigital number, since it uses as much as digits as its factorization.

2128692534009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709564178006.

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 2128692534009 in words is "two trillion, one hundred twenty-eight billion, six hundred ninety-two million, five hundred thirty-four thousand, nine".