128826354020 has 96 divisors (see below), whose sum is σ = 334263379968. Its totient is φ = 40612626432.

The previous prime is 128826354017. The next prime is 128826354029. The reversal of 128826354020 is 20453628821.

It is not an unprimeable number, because it can be changed into a prime (128826354029) 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, 330029 + ... + 605451.

It is an arithmetic number, because the mean of its divisors is an integer number (3481910208).

Almost surely, 2^128826354020 is an apocalyptic number.

128826354020 is a gapful number since it is divisible by the number (10) 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 128826354020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167131689984).

128826354020 is an abundant number, since it is smaller than the sum of its proper divisors (205437025948).

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

128826354020 is a wasteful number, since it uses less digits than its factorization.

128826354020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275709 (or 275707 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 128826354020 in words is "one hundred twenty-eight billion, eight hundred twenty-six million, three hundred fifty-four thousand, twenty".