1666426425014 has 8 divisors (see below), whose sum is σ = 2691919609680. Its totient is φ = 769119888456.

The previous prime is 1666426425011. The next prime is 1666426425019. The reversal of 1666426425014 is 4105246246661.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1666426425014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666426425011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32046661994 + ... + 32046662045.

It is an arithmetic number, because the mean of its divisors is an integer number (336489951210).

Almost surely, 2^{1666426425014} is an apocalyptic number.

1666426425014 is a deficient number, since it is larger than the sum of its proper divisors (1025493184666).

1666426425014 is a wasteful number, since it uses less digits than its factorization.

1666426425014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64093324054.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 1666426425014 in words is "one trillion, six hundred sixty-six billion, four hundred twenty-six million, four hundred twenty-five thousand, fourteen".