128969791104 has 256 divisors, whose sum is σ = 441838540800. Its totient is φ = 32343306240.

The previous prime is 128969791103. The next prime is 128969791121. The reversal of 128969791104 is 401197969821.

It is not an unprimeable number, because it can be changed into a prime (128969791103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 782269 + ... + 932675.

It is an arithmetic number, because the mean of its divisors is an integer number (1725931800).

Almost surely, 2^128969791104 is an apocalyptic number.

128969791104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128969791104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220919270400).

128969791104 is an abundant number, since it is smaller than the sum of its proper divisors (312868749696).

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

128969791104 is a wasteful number, since it uses less digits than its factorization.

128969791104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150471 (or 150459 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 57.

The spelling of 128969791104 in words is "one hundred twenty-eight billion, nine hundred sixty-nine million, seven hundred ninety-one thousand, one hundred four".