2109125840469 has 8 divisors (see below), whose sum is σ = 2812270013280. Its totient is φ = 1406032780656.

The previous prime is 2109125840461. The next prime is 2109125840489. The reversal of 2109125840469 is 9640485219012.

It is a happy number.

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

It is not a de Polignac number, because 2109125840469 - 2³ = 2109125840461 is a prime.

It is a super-2 number, since 2×2109125840469² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109125840461) 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, 12681862 + ... + 12847095.

It is an arithmetic number, because the mean of its divisors is an integer number (351533751660).

Almost surely, 2^{2109125840469} is an apocalyptic number.

It is an amenable number.

2109125840469 is a deficient number, since it is larger than the sum of its proper divisors (703144172811).

2109125840469 is a wasteful number, since it uses less digits than its factorization.

2109125840469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25556499.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 2109125840469 in words is "two trillion, one hundred nine billion, one hundred twenty-five million, eight hundred forty thousand, four hundred sixty-nine".