128439338119 has 2 divisors, whose sum is σ = 128439338120. Its totient is φ = 128439338118.

The previous prime is 128439338107. The next prime is 128439338123. The reversal of 128439338119 is 911833934821.

It is a strong prime.

It is an emirp because it is prime and its reverse (911833934821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128439338119 is a prime.

It is a super-2 number, since 2×128439338119² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128439338719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64219669059 + 64219669060.

It is an arithmetic number, because the mean of its divisors is an integer number (64219669060).

Almost surely, 2^128439338119 is an apocalyptic number.

128439338119 is a deficient number, since it is larger than the sum of its proper divisors (1).

128439338119 is an equidigital number, since it uses as much as digits as its factorization.

128439338119 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The spelling of 128439338119 in words is "one hundred twenty-eight billion, four hundred thirty-nine million, three hundred thirty-eight thousand, one hundred nineteen".