127721031338 has 8 divisors (see below), whose sum is σ = 191638796832. Its totient is φ = 63841432396.

The previous prime is 127721031313. The next prime is 127721031371. The reversal of 127721031338 is 833130127721.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9533270 + ... + 9546657.

It is an arithmetic number, because the mean of its divisors is an integer number (23954849604).

Almost surely, 2^127721031338 is an apocalyptic number.

127721031338 is a deficient number, since it is larger than the sum of its proper divisors (63917765494).

127721031338 is a wasteful number, since it uses less digits than its factorization.

127721031338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19083276.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 127721031338 in words is "one hundred twenty-seven billion, seven hundred twenty-one million, thirty-one thousand, three hundred thirty-eight".