127866669664 has 24 divisors (see below), whose sum is σ = 251758446408. Its totient is φ = 63928016640.

The previous prime is 127866669653. The next prime is 127866669673. The reversal of 127866669664 is 466966668721.

It is a self number, because there is not a number n which added to its sum of digits gives 127866669664.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239764 + ... + 559660.

It is an arithmetic number, because the mean of its divisors is an integer number (10489935267).

Almost surely, 2^127866669664 is an apocalyptic number.

It is an amenable number.

127866669664 is a deficient number, since it is larger than the sum of its proper divisors (123891776744).

127866669664 is a wasteful number, since it uses less digits than its factorization.

127866669664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332398 (or 332390 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 67.

The spelling of 127866669664 in words is "one hundred twenty-seven billion, eight hundred sixty-six million, six hundred sixty-nine thousand, six hundred sixty-four".