128810922240 has 2304 divisors, whose sum is σ = 607622529024. Its totient is φ = 22383820800.

The previous prime is 128810922239. The next prime is 128810922281. The reversal of 128810922240 is 42229018821.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2740657897 + ... + 2740657943.

It is an arithmetic number, because the mean of its divisors is an integer number (263725056).

Almost surely, 2^128810922240 is an apocalyptic number.

128810922240 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 128810922240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303811264512).

128810922240 is an abundant number, since it is smaller than the sum of its proper divisors (478811606784).

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

128810922240 is a wasteful number, since it uses less digits than its factorization.

128810922240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 128810922240 in words is "one hundred twenty-eight billion, eight hundred ten million, nine hundred twenty-two thousand, two hundred forty".