128492244401 has 2 divisors, whose sum is σ = 128492244402. Its totient is φ = 128492244400.

The previous prime is 128492244373. The next prime is 128492244403. The reversal of 128492244401 is 104442294821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88792080400 + 39700164001 = 297980^2 + 199249^2 .

It is a cyclic number.

It is not a de Polignac number, because 128492244401 - 2¹⁸ = 128491982257 is a prime.

Together with 128492244403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128492244403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64246122200 + 64246122201.

It is an arithmetic number, because the mean of its divisors is an integer number (64246122201).

Almost surely, 2^128492244401 is an apocalyptic number.

It is an amenable number.

128492244401 is a deficient number, since it is larger than the sum of its proper divisors (1).

128492244401 is an equidigital number, since it uses as much as digits as its factorization.

128492244401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 128492244401 in words is "one hundred twenty-eight billion, four hundred ninety-two million, two hundred forty-four thousand, four hundred one".