128211030786 has 16 divisors (see below), whose sum is σ = 260033640768. Its totient is φ = 42135080400.

The previous prime is 128211030769. The next prime is 128211030803. The reversal of 128211030786 is 687030112821.

It is an interprime number because it is at equal distance from previous prime (128211030769) and next prime (128211030803).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150482005 + ... + 150482856.

It is an arithmetic number, because the mean of its divisors is an integer number (16252102548).

Almost surely, 2^128211030786 is an apocalyptic number.

128211030786 is an abundant number, since it is smaller than the sum of its proper divisors (131822609982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128211030786 is a wasteful number, since it uses less digits than its factorization.

128211030786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300964937.

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 128211030786 in words is "one hundred twenty-eight billion, two hundred eleven million, thirty thousand, seven hundred eighty-six".