6664554137672 has 32 divisors (see below), whose sum is σ = 12651282756000. Its totient is φ = 3290908508544.

The previous prime is 6664554137663. The next prime is 6664554137741. The reversal of 6664554137672 is 2767314554666.

It is a happy number.

It is an unprimeable number.

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, 67253 + ... + 3651524.

It is an arithmetic number, because the mean of its divisors is an integer number (395352586125).

Almost surely, 2^{6664554137672} is an apocalyptic number.

It is an amenable number.

6664554137672 is a deficient number, since it is larger than the sum of its proper divisors (5986728618328).

6664554137672 is a wasteful number, since it uses less digits than its factorization.

6664554137672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721565 (or 3721561 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 62.

The spelling of 6664554137672 in words is "six trillion, six hundred sixty-four billion, five hundred fifty-four million, one hundred thirty-seven thousand, six hundred seventy-two".