127704443897 has 2 divisors, whose sum is σ = 127704443898. Its totient is φ = 127704443896.

The previous prime is 127704443891. The next prime is 127704443947. The reversal of 127704443897 is 798344407721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108859743721 + 18844700176 = 329939^2 + 137276^2 .

It is a cyclic number.

It is not a de Polignac number, because 127704443897 - 2⁶ = 127704443833 is a prime.

It is not a weakly prime, because it can be changed into another prime (127704443891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63852221948 + 63852221949.

It is an arithmetic number, because the mean of its divisors is an integer number (63852221949).

Almost surely, 2^127704443897 is an apocalyptic number.

It is an amenable number.

127704443897 is a deficient number, since it is larger than the sum of its proper divisors (1).

127704443897 is an equidigital number, since it uses as much as digits as its factorization.

127704443897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9483264, while the sum is 56.

The spelling of 127704443897 in words is "one hundred twenty-seven billion, seven hundred four million, four hundred forty-three thousand, eight hundred ninety-seven".