128790066432 has 144 divisors (see below), whose sum is σ = 362057873408. Its totient is φ = 40578693120.

The previous prime is 128790066373. The next prime is 128790066439. The reversal of 128790066432 is 234660097821.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128790066439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 960843 + ... + 1086645.

Almost surely, 2^128790066432 is an apocalyptic number.

128790066432 is a gapful number since it is divisible by the number (12) 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 128790066432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181028936704).

128790066432 is an abundant number, since it is smaller than the sum of its proper divisors (233267806976).

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

128790066432 is a wasteful number, since it uses less digits than its factorization.

128790066432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125896 (or 125882 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 128790066432 in words is "one hundred twenty-eight billion, seven hundred ninety million, sixty-six thousand, four hundred thirty-two".