127284975893 has 2 divisors, whose sum is σ = 127284975894. Its totient is φ = 127284975892.

The previous prime is 127284975863. The next prime is 127284975899. The reversal of 127284975893 is 398579482721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72868683364 + 54416292529 = 269942^2 + 233273^2 .

It is a cyclic number.

It is not a de Polignac number, because 127284975893 - 2²⁰ = 127283927317 is a prime.

It is a super-2 number, since 2×127284975893² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127284975899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63642487946 + 63642487947.

It is an arithmetic number, because the mean of its divisors is an integer number (63642487947).

Almost surely, 2^127284975893 is an apocalyptic number.

It is an amenable number.

127284975893 is a deficient number, since it is larger than the sum of its proper divisors (1).

127284975893 is an equidigital number, since it uses as much as digits as its factorization.

127284975893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60963840, while the sum is 65.

The spelling of 127284975893 in words is "one hundred twenty-seven billion, two hundred eighty-four million, nine hundred seventy-five thousand, eight hundred ninety-three".