127705204664 has 8 divisors (see below), whose sum is σ = 239447258760. Its totient is φ = 63852602328.

The previous prime is 127705204651. The next prime is 127705204699. The reversal of 127705204664 is 466402507721.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 7981575284 + ... + 7981575299.

It is an arithmetic number, because the mean of its divisors is an integer number (29930907345).

Almost surely, 2^127705204664 is an apocalyptic number.

It is an amenable number.

127705204664 is a deficient number, since it is larger than the sum of its proper divisors (111742054096).

127705204664 is a wasteful number, since it uses less digits than its factorization.

127705204664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15963150589 (or 15963150585 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 127705204664 in words is "one hundred twenty-seven billion, seven hundred five million, two hundred four thousand, six hundred sixty-four".