127668577406 has 32 divisors (see below), whose sum is σ = 205851702240. Its totient is φ = 59168019456.

The previous prime is 127668577357. The next prime is 127668577453. The reversal of 127668577406 is 604775866721.

It is a happy number.

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, 1642325 + ... + 1718303.

It is an arithmetic number, because the mean of its divisors is an integer number (6432865695).

Almost surely, 2^127668577406 is an apocalyptic number.

127668577406 is a deficient number, since it is larger than the sum of its proper divisors (78183124834).

127668577406 is a wasteful number, since it uses less digits than its factorization.

127668577406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76748.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 127668577406 in words is "one hundred twenty-seven billion, six hundred sixty-eight million, five hundred seventy-seven thousand, four hundred six".