127478989783 has 2 divisors, whose sum is σ = 127478989784. Its totient is φ = 127478989782.

The previous prime is 127478989753. The next prime is 127478989801. The reversal of 127478989783 is 387989874721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127478989783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127478989753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63739494891 + 63739494892.

It is an arithmetic number, because the mean of its divisors is an integer number (63739494892).

Almost surely, 2^127478989783 is an apocalyptic number.

127478989783 is a deficient number, since it is larger than the sum of its proper divisors (1).

127478989783 is an equidigital number, since it uses as much as digits as its factorization.

127478989783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 341397504, while the sum is 73.

The spelling of 127478989783 in words is "one hundred twenty-seven billion, four hundred seventy-eight million, nine hundred eighty-nine thousand, seven hundred eighty-three".