128185468079 has 2 divisors, whose sum is σ = 128185468080. Its totient is φ = 128185468078.

The previous prime is 128185468063. The next prime is 128185468139. The reversal of 128185468079 is 970864581821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128185468079 - 2⁴ = 128185468063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128185464079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64092734039 + 64092734040.

It is an arithmetic number, because the mean of its divisors is an integer number (64092734040).

Almost surely, 2^128185468079 is an apocalyptic number.

128185468079 is a deficient number, since it is larger than the sum of its proper divisors (1).

128185468079 is an equidigital number, since it uses as much as digits as its factorization.

128185468079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 59.

The spelling of 128185468079 in words is "one hundred twenty-eight billion, one hundred eighty-five million, four hundred sixty-eight thousand, seventy-nine".