6664131212542 has 8 divisors (see below), whose sum is σ = 10122730956000. Its totient is φ = 3289887560544.

The previous prime is 6664131212483. The next prime is 6664131212561. The reversal of 6664131212542 is 2452121314666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21089022667 + ... + 21089022982.

It is an arithmetic number, because the mean of its divisors is an integer number (1265341369500).

Almost surely, 2^{6664131212542} is an apocalyptic number.

6664131212542 is a deficient number, since it is larger than the sum of its proper divisors (3458599743458).

6664131212542 is a wasteful number, since it uses less digits than its factorization.

6664131212542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42178045730.

The product of its digits is 414720, while the sum is 43.

The spelling of 6664131212542 in words is "six trillion, six hundred sixty-four billion, one hundred thirty-one million, two hundred twelve thousand, five hundred forty-two".