128800500139 has 2 divisors, whose sum is σ = 128800500140. Its totient is φ = 128800500138.

The previous prime is 128800500109. The next prime is 128800500151. The reversal of 128800500139 is 931005008821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128800500139 - 2⁷ = 128800500011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128800500098 and 128800500107.

It is not a weakly prime, because it can be changed into another prime (128800500109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64400250069 + 64400250070.

It is an arithmetic number, because the mean of its divisors is an integer number (64400250070).

Almost surely, 2^128800500139 is an apocalyptic number.

128800500139 is a deficient number, since it is larger than the sum of its proper divisors (1).

128800500139 is an equidigital number, since it uses as much as digits as its factorization.

128800500139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 128800500139 in words is "one hundred twenty-eight billion, eight hundred million, five hundred thousand, one hundred thirty-nine".