6669451840342 has 4 divisors (see below), whose sum is σ = 10004177760516. Its totient is φ = 3334725920170.

The previous prime is 6669451840223. The next prime is 6669451840351. The reversal of 6669451840342 is 2430481549666.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1667362960084 + ... + 1667362960087.

It is an arithmetic number, because the mean of its divisors is an integer number (2501044440129).

Almost surely, 2^{6669451840342} is an apocalyptic number.

6669451840342 is a deficient number, since it is larger than the sum of its proper divisors (3334725920174).

6669451840342 is a wasteful number, since it uses less digits than its factorization.

6669451840342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334725920173.

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 6669451840342 in words is "six trillion, six hundred sixty-nine billion, four hundred fifty-one million, eight hundred forty thousand, three hundred forty-two".