128402445751 has 2 divisors, whose sum is σ = 128402445752. Its totient is φ = 128402445750.

The previous prime is 128402445707. The next prime is 128402445781. The reversal of 128402445751 is 157544204821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128402445751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128402445698 and 128402445707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128402445781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64201222875 + 64201222876.

It is an arithmetic number, because the mean of its divisors is an integer number (64201222876).

Almost surely, 2^128402445751 is an apocalyptic number.

128402445751 is a deficient number, since it is larger than the sum of its proper divisors (1).

128402445751 is an equidigital number, since it uses as much as digits as its factorization.

128402445751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 358400, while the sum is 43.

The spelling of 128402445751 in words is "one hundred twenty-eight billion, four hundred two million, four hundred forty-five thousand, seven hundred fifty-one".