2131692016609 has 4 divisors (see below), whose sum is σ = 2131715850160. Its totient is φ = 2131668183060.

The previous prime is 2131692016589. The next prime is 2131692016613. The reversal of 2131692016609 is 9066102961312.

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 2131692016609 - 2¹³ = 2131692008417 is a prime.

It is a super-2 number, since 2×2131692016609² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131692016009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11782107 + ... + 11961664.

It is an arithmetic number, because the mean of its divisors is an integer number (532928962540).

Almost surely, 2^{2131692016609} is an apocalyptic number.

It is an amenable number.

2131692016609 is a deficient number, since it is larger than the sum of its proper divisors (23833551).

2131692016609 is an equidigital number, since it uses as much as digits as its factorization.

2131692016609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23833550.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 2131692016609 in words is "two trillion, one hundred thirty-one billion, six hundred ninety-two million, sixteen thousand, six hundred nine".