128829554380231 has 2 divisors, whose sum is σ = 128829554380232. Its totient is φ = 128829554380230.

The previous prime is 128829554380199. The next prime is 128829554380271. The reversal of 128829554380231 is 132083455928821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128829554380231 - 2⁵ = 128829554380199 is a prime.

It is a super-2 number, since 2×128829554380231² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128829554380231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128829554380271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64414777190115 + 64414777190116.

It is an arithmetic number, because the mean of its divisors is an integer number (64414777190116).

Almost surely, 2^{128829554380231} is an apocalyptic number.

128829554380231 is a deficient number, since it is larger than the sum of its proper divisors (1).

128829554380231 is an equidigital number, since it uses as much as digits as its factorization.

128829554380231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33177600, while the sum is 61.

The spelling of 128829554380231 in words is "one hundred twenty-eight trillion, eight hundred twenty-nine billion, five hundred fifty-four million, three hundred eighty thousand, two hundred thirty-one".