1427666345686 has 32 divisors (see below), whose sum is σ = 2494005085440. Its totient is φ = 600216435936.

The previous prime is 1427666345671. The next prime is 1427666345711. The reversal of 1427666345686 is 6865436667241.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4582405 + ... + 4884031.

It is an arithmetic number, because the mean of its divisors is an integer number (77937658920).

Almost surely, 2^{1427666345686} is an apocalyptic number.

1427666345686 is a deficient number, since it is larger than the sum of its proper divisors (1066338739754).

1427666345686 is a wasteful number, since it uses less digits than its factorization.

1427666345686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308068.

The product of its digits is 209018880, while the sum is 64.

The spelling of 1427666345686 in words is "one trillion, four hundred twenty-seven billion, six hundred sixty-six million, three hundred forty-five thousand, six hundred eighty-six".