127856447573 has 2 divisors, whose sum is σ = 127856447574. Its totient is φ = 127856447572.

The previous prime is 127856447569. The next prime is 127856447629. The reversal of 127856447573 is 375744658721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110654026609 + 17202420964 = 332647^2 + 131158^2 .

It is a cyclic number.

It is not a de Polignac number, because 127856447573 - 2² = 127856447569 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127856447503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63928223786 + 63928223787.

It is an arithmetic number, because the mean of its divisors is an integer number (63928223787).

Almost surely, 2^127856447573 is an apocalyptic number.

It is an amenable number.

127856447573 is a deficient number, since it is larger than the sum of its proper divisors (1).

127856447573 is an equidigital number, since it uses as much as digits as its factorization.

127856447573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39513600, while the sum is 59.

The spelling of 127856447573 in words is "one hundred twenty-seven billion, eight hundred fifty-six million, four hundred forty-seven thousand, five hundred seventy-three".