128188751113 has 2 divisors, whose sum is σ = 128188751114. Its totient is φ = 128188751112.

The previous prime is 128188751083. The next prime is 128188751147. The reversal of 128188751113 is 311157881821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127161420409 + 1027330704 = 356597^2 + 32052^2 .

It is a cyclic number.

It is not a de Polignac number, because 128188751113 - 2⁵ = 128188751081 is a prime.

It is not a weakly prime, because it can be changed into another prime (128188751153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64094375556 + 64094375557.

It is an arithmetic number, because the mean of its divisors is an integer number (64094375557).

Almost surely, 2^128188751113 is an apocalyptic number.

It is an amenable number.

128188751113 is a deficient number, since it is larger than the sum of its proper divisors (1).

128188751113 is an equidigital number, since it uses as much as digits as its factorization.

128188751113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 46.

The spelling of 128188751113 in words is "one hundred twenty-eight billion, one hundred eighty-eight million, seven hundred fifty-one thousand, one hundred thirteen".