127640103529 has 2 divisors, whose sum is σ = 127640103530. Its totient is φ = 127640103528.

The previous prime is 127640103523. The next prime is 127640103571. The reversal of 127640103529 is 925301046721.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104683308304 + 22956795225 = 323548^2 + 151515^2 .

It is a cyclic number.

It is not a de Polignac number, because 127640103529 - 2⁵ = 127640103497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 127640103491 and 127640103500.

It is not a weakly prime, because it can be changed into another prime (127640103523) 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, 63820051764 + 63820051765.

It is an arithmetic number, because the mean of its divisors is an integer number (63820051765).

Almost surely, 2^127640103529 is an apocalyptic number.

It is an amenable number.

127640103529 is a deficient number, since it is larger than the sum of its proper divisors (1).

127640103529 is an equidigital number, since it uses as much as digits as its factorization.

127640103529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 127640103529 in words is "one hundred twenty-seven billion, six hundred forty million, one hundred three thousand, five hundred twenty-nine".