2543679669 has 8 divisors (see below), whose sum is σ = 3432435552. Its totient is φ = 1675355120.

The previous prime is 2543679661. The next prime is 2543679763. The reversal of 2543679669 is 9669763452.

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

It is a cyclic number.

It is not a de Polignac number, because 2543679669 - 2³ = 2543679661 is a prime.

It is a super-2 number, since 2×2543679669² = 12940612516967899122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543679661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5107542 + ... + 5108039.

It is an arithmetic number, because the mean of its divisors is an integer number (429054444).

Almost surely, 2^2543679669 is an apocalyptic number.

It is an amenable number.

2543679669 is a deficient number, since it is larger than the sum of its proper divisors (888755883).

2543679669 is a wasteful number, since it uses less digits than its factorization.

2543679669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10215667.

The product of its digits is 14696640, while the sum is 57.

The square root of 2543679669 is about 50434.9052641125. The cubic root of 2543679669 is about 1365.0675397621.

The spelling of 2543679669 in words is "two billion, five hundred forty-three million, six hundred seventy-nine thousand, six hundred sixty-nine".