2127145669 has 4 divisors (see below), whose sum is σ = 2320522560. Its totient is φ = 1933768780.

The previous prime is 2127145667. The next prime is 2127145673. The reversal of 2127145669 is 9665417212.

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 2127145669 - 2¹ = 2127145667 is a prime.

It is a super-3 number, since 3×2127145669³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127145661) 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, 96688429 + ... + 96688450.

It is an arithmetic number, because the mean of its divisors is an integer number (580130640).

Almost surely, 2^2127145669 is an apocalyptic number.

It is an amenable number.

2127145669 is a deficient number, since it is larger than the sum of its proper divisors (193376891).

2127145669 is a wasteful number, since it uses less digits than its factorization.

2127145669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193376890.

The product of its digits is 181440, while the sum is 43.

The square root of 2127145669 is about 46120.9894624996. The cubic root of 2127145669 is about 1286.0733650007.

The spelling of 2127145669 in words is "two billion, one hundred twenty-seven million, one hundred forty-five thousand, six hundred sixty-nine".