127777421423 has 2 divisors, whose sum is σ = 127777421424. Its totient is φ = 127777421422.

The previous prime is 127777421407. The next prime is 127777421459. The reversal of 127777421423 is 324124777721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127777421423 - 2⁴ = 127777421407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127777421923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63888710711 + 63888710712.

It is an arithmetic number, because the mean of its divisors is an integer number (63888710712).

Almost surely, 2^127777421423 is an apocalyptic number.

127777421423 is a deficient number, since it is larger than the sum of its proper divisors (1).

127777421423 is an equidigital number, since it uses as much as digits as its factorization.

127777421423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921984, while the sum is 47.

The spelling of 127777421423 in words is "one hundred twenty-seven billion, seven hundred seventy-seven million, four hundred twenty-one thousand, four hundred twenty-three".