127637643386 has 16 divisors (see below), whose sum is σ = 210777763680. Its totient is φ = 57484842480.

The previous prime is 127637643379. The next prime is 127637643389. The reversal of 127637643386 is 683346736721.

It is not an unprimeable number, because it can be changed into a prime (127637643389) 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 7 ways as a sum of consecutive naturals, for example, 26610956 + ... + 26615751.

It is an arithmetic number, because the mean of its divisors is an integer number (13173610230).

Almost surely, 2^127637643386 is an apocalyptic number.

127637643386 is a deficient number, since it is larger than the sum of its proper divisors (83140120294).

127637643386 is a wasteful number, since it uses less digits than its factorization.

127637643386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53226829.

The product of its digits is 18289152, while the sum is 56.

The spelling of 127637643386 in words is "one hundred twenty-seven billion, six hundred thirty-seven million, six hundred forty-three thousand, three hundred eighty-six".