2121666592319 has 8 divisors (see below), whose sum is σ = 2153367271680. Its totient is φ = 2089966913496.

The previous prime is 2121666592313. The next prime is 2121666592361. The reversal of 2121666592319 is 9132956661212.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121666592319 is a prime.

It is a super-2 number, since 2×2121666592319² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121666592313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4769402 + ... + 5195240.

It is an arithmetic number, because the mean of its divisors is an integer number (269170908960).

Almost surely, 2^{2121666592319} is an apocalyptic number.

2121666592319 is a deficient number, since it is larger than the sum of its proper divisors (31700679361).

2121666592319 is an equidigital number, since it uses as much as digits as its factorization.

2121666592319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500269.

The product of its digits is 2099520, while the sum is 53.

The spelling of 2121666592319 in words is "two trillion, one hundred twenty-one billion, six hundred sixty-six million, five hundred ninety-two thousand, three hundred nineteen".