128345350979 has 2 divisors, whose sum is σ = 128345350980. Its totient is φ = 128345350978.

The previous prime is 128345350963. The next prime is 128345351077. The reversal of 128345350979 is 979053543821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128345350979 - 2⁴ = 128345350963 is a prime.

It is not a weakly prime, because it can be changed into another prime (128345350919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64172675489 + 64172675490.

It is an arithmetic number, because the mean of its divisors is an integer number (64172675490).

Almost surely, 2^128345350979 is an apocalyptic number.

128345350979 is a deficient number, since it is larger than the sum of its proper divisors (1).

128345350979 is an equidigital number, since it uses as much as digits as its factorization.

128345350979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 128345350979 in words is "one hundred twenty-eight billion, three hundred forty-five million, three hundred fifty thousand, nine hundred seventy-nine".