128286851929 has 2 divisors, whose sum is σ = 128286851930. Its totient is φ = 128286851928.

The previous prime is 128286851827. The next prime is 128286851933. The reversal of 128286851929 is 929158682821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100222896400 + 28063955529 = 316580^2 + 167523^2 .

It is a cyclic number.

It is not a de Polignac number, because 128286851929 - 2⁷ = 128286851801 is a prime.

It is a super-3 number, since 3×128286851929³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (128286851939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64143425964 + 64143425965.

It is an arithmetic number, because the mean of its divisors is an integer number (64143425965).

Almost surely, 2^128286851929 is an apocalyptic number.

It is an amenable number.

128286851929 is a deficient number, since it is larger than the sum of its proper divisors (1).

128286851929 is an equidigital number, since it uses as much as digits as its factorization.

128286851929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9953280, while the sum is 61.

The spelling of 128286851929 in words is "one hundred twenty-eight billion, two hundred eighty-six million, eight hundred fifty-one thousand, nine hundred twenty-nine".