127731510979 has 2 divisors, whose sum is σ = 127731510980. Its totient is φ = 127731510978.

The previous prime is 127731510953. The next prime is 127731511031. The reversal of 127731510979 is 979015137721.

It is an a-pointer prime, because the next prime (127731511031) can be obtained adding 127731510979 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127731510979 - 2¹⁷ = 127731379907 is a prime.

It is not a weakly prime, because it can be changed into another prime (127731520979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63865755489 + 63865755490.

It is an arithmetic number, because the mean of its divisors is an integer number (63865755490).

Almost surely, 2^127731510979 is an apocalyptic number.

127731510979 is a deficient number, since it is larger than the sum of its proper divisors (1).

127731510979 is an equidigital number, since it uses as much as digits as its factorization.

127731510979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 833490, while the sum is 52.

The spelling of 127731510979 in words is "one hundred twenty-seven billion, seven hundred thirty-one million, five hundred ten thousand, nine hundred seventy-nine".