127651388897 has 2 divisors, whose sum is σ = 127651388898. Its totient is φ = 127651388896.

The previous prime is 127651388861. The next prime is 127651388911. The reversal of 127651388897 is 798883156721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110191466401 + 17459922496 = 331951^2 + 132136^2 .

It is a cyclic number.

It is not a de Polignac number, because 127651388897 - 2⁶ = 127651388833 is a prime.

It is not a weakly prime, because it can be changed into another prime (127651388497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63825694448 + 63825694449.

It is an arithmetic number, because the mean of its divisors is an integer number (63825694449).

Almost surely, 2^127651388897 is an apocalyptic number.

It is an amenable number.

127651388897 is a deficient number, since it is larger than the sum of its proper divisors (1).

127651388897 is an equidigital number, since it uses as much as digits as its factorization.

127651388897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 65.

The spelling of 127651388897 in words is "one hundred twenty-seven billion, six hundred fifty-one million, three hundred eighty-eight thousand, eight hundred ninety-seven".