127380605389 has 2 divisors, whose sum is σ = 127380605390. Its totient is φ = 127380605388.

The previous prime is 127380605377. The next prime is 127380605437. The reversal of 127380605389 is 983506083721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108581453289 + 18799152100 = 329517^2 + 137110^2 .

It is a cyclic number.

It is not a de Polignac number, because 127380605389 - 2³³ = 118790670797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127380605689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63690302694 + 63690302695.

It is an arithmetic number, because the mean of its divisors is an integer number (63690302695).

Almost surely, 2^127380605389 is an apocalyptic number.

It is an amenable number.

127380605389 is a deficient number, since it is larger than the sum of its proper divisors (1).

127380605389 is an equidigital number, since it uses as much as digits as its factorization.

127380605389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 127380605389 in words is "one hundred twenty-seven billion, three hundred eighty million, six hundred five thousand, three hundred eighty-nine".