6669641413 has 4 divisors (see below), whose sum is σ = 6884791168. Its totient is φ = 6454491660.

The previous prime is 6669641393. The next prime is 6669641431. The reversal of 6669641413 is 3141469666.

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 6669641413 - 2²⁵ = 6636086981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6669641213) 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, 107574831 + ... + 107574892.

It is an arithmetic number, because the mean of its divisors is an integer number (1721197792).

Almost surely, 2^6669641413 is an apocalyptic number.

It is an amenable number.

6669641413 is a deficient number, since it is larger than the sum of its proper divisors (215149755).

6669641413 is a wasteful number, since it uses less digits than its factorization.

6669641413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215149754.

The product of its digits is 559872, while the sum is 46.

The square root of 6669641413 is about 81667.8725876951. The cubic root of 6669641413 is about 1882.3519504833.

The spelling of 6669641413 in words is "six billion, six hundred sixty-nine million, six hundred forty-one thousand, four hundred thirteen".