127641435617699 has 2 divisors, whose sum is σ = 127641435617700. Its totient is φ = 127641435617698.

The previous prime is 127641435617681. The next prime is 127641435617789. The reversal of 127641435617699 is 996716534146721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127641435617699 - 2¹² = 127641435613603 is a prime.

It is not a weakly prime, because it can be changed into another prime (127641435617609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63820717808849 + 63820717808850.

It is an arithmetic number, because the mean of its divisors is an integer number (63820717808850).

Almost surely, 2^{127641435617699} is an apocalyptic number.

127641435617699 is a deficient number, since it is larger than the sum of its proper divisors (1).

127641435617699 is an equidigital number, since it uses as much as digits as its factorization.

127641435617699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 71.

The spelling of 127641435617699 in words is "one hundred twenty-seven trillion, six hundred forty-one billion, four hundred thirty-five million, six hundred seventeen thousand, six hundred ninety-nine".