128990818367 has 2 divisors, whose sum is σ = 128990818368. Its totient is φ = 128990818366.

The previous prime is 128990818357. The next prime is 128990818381. The reversal of 128990818367 is 763818099821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128990818367 - 2³⁰ = 127917076543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128990818357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64495409183 + 64495409184.

It is an arithmetic number, because the mean of its divisors is an integer number (64495409184).

Almost surely, 2^128990818367 is an apocalyptic number.

128990818367 is a deficient number, since it is larger than the sum of its proper divisors (1).

128990818367 is an equidigital number, since it uses as much as digits as its factorization.

128990818367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 62.

The spelling of 128990818367 in words is "one hundred twenty-eight billion, nine hundred ninety million, eight hundred eighteen thousand, three hundred sixty-seven".