127380431805 has 32 divisors (see below), whose sum is σ = 222383370240. Its totient is φ = 61747260480.

The previous prime is 127380431779. The next prime is 127380431833. The reversal of 127380431805 is 508134083721.

It is not a de Polignac number, because 127380431805 - 2⁹ = 127380431293 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733164 + ... + 890106.

It is an arithmetic number, because the mean of its divisors is an integer number (6949480320).

Almost surely, 2^127380431805 is an apocalyptic number.

127380431805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

127380431805 is a deficient number, since it is larger than the sum of its proper divisors (95002938435).

127380431805 is a wasteful number, since it uses less digits than its factorization.

127380431805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161881.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 127380431805 in words is "one hundred twenty-seven billion, three hundred eighty million, four hundred thirty-one thousand, eight hundred five".