128102789311 has 24 divisors (see below), whose sum is σ = 156971958000. Its totient is φ = 103949443584.

The previous prime is 128102789299. The next prime is 128102789389. The reversal of 128102789311 is 113987201821.

It is not a de Polignac number, because 128102789311 - 2⁵ = 128102789279 is a prime.

It is the 357915-th Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128102781311) by changing a digit.

It is a nontrivial repunit in base 357914.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1282255 + ... + 1378543.

It is an arithmetic number, because the mean of its divisors is an integer number (6540498250).

Almost surely, 2^128102789311 is an apocalyptic number.

128102789311 is a deficient number, since it is larger than the sum of its proper divisors (28869168689).

128102789311 is a wasteful number, since it uses less digits than its factorization.

128102789311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97751 (or 97744 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 128102789311 in words is "one hundred twenty-eight billion, one hundred two million, seven hundred eighty-nine thousand, three hundred eleven".