102728437127 has 2 divisors, whose sum is σ = 102728437128. Its totient is φ = 102728437126.

The previous prime is 102728437121. The next prime is 102728437151. The reversal of 102728437127 is 721734827201.

It is a weak prime.

It is an emirp because it is prime and its reverse (721734827201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102728437127 - 2²⁰ = 102727388551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102728437121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51364218563 + 51364218564.

It is an arithmetic number, because the mean of its divisors is an integer number (51364218564).

Almost surely, 2^102728437127 is an apocalyptic number.

102728437127 is a deficient number, since it is larger than the sum of its proper divisors (1).

102728437127 is an equidigital number, since it uses as much as digits as its factorization.

102728437127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 263424, while the sum is 44.

The spelling of 102728437127 in words is "one hundred two billion, seven hundred twenty-eight million, four hundred thirty-seven thousand, one hundred twenty-seven".