127768663405 has 8 divisors (see below), whose sum is σ = 161391996000. Its totient is φ = 96835197456.

The previous prime is 127768663361. The next prime is 127768663423. The reversal of 127768663405 is 504366867721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127768663405 - 2¹¹ = 127768661357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672466555 + ... + 672466744.

It is an arithmetic number, because the mean of its divisors is an integer number (20173999500).

Almost surely, 2^127768663405 is an apocalyptic number.

It is an amenable number.

127768663405 is a deficient number, since it is larger than the sum of its proper divisors (33623332595).

127768663405 is a wasteful number, since it uses less digits than its factorization.

127768663405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344933323.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 127768663405 in words is "one hundred twenty-seven billion, seven hundred sixty-eight million, six hundred sixty-three thousand, four hundred five".