127438451171 has 2 divisors, whose sum is σ = 127438451172. Its totient is φ = 127438451170.

The previous prime is 127438451167. The next prime is 127438451183. The reversal of 127438451171 is 171154834721.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127438451171 - 2² = 127438451167 is a prime.

It is not a weakly prime, because it can be changed into another prime (127438451671) 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 as a sum of consecutive naturals, namely, 63719225585 + 63719225586.

It is an arithmetic number, because the mean of its divisors is an integer number (63719225586).

Almost surely, 2^127438451171 is an apocalyptic number.

127438451171 is a deficient number, since it is larger than the sum of its proper divisors (1).

127438451171 is an equidigital number, since it uses as much as digits as its factorization.

127438451171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 44.

The spelling of 127438451171 in words is "one hundred twenty-seven billion, four hundred thirty-eight million, four hundred fifty-one thousand, one hundred seventy-one".