128481612480 has 448 divisors, whose sum is σ = 492018401280. Its totient is φ = 31373733888.

The previous prime is 128481612443. The next prime is 128481612517. The reversal of 128481612480 is 84216184821.

128481612480 is a `hidden beast` number, since 1 + 2 + 8 + 4 + 8 + 161 + 2 + 480 = 666.

It is an interprime number because it is at equal distance from previous prime (128481612443) and next prime (128481612517).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14260137 + ... + 14269143.

It is an arithmetic number, because the mean of its divisors is an integer number (1098255360).

Almost surely, 2^128481612480 is an apocalyptic number.

128481612480 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 128481612480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246009200640).

128481612480 is an abundant number, since it is smaller than the sum of its proper divisors (363536788800).

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

128481612480 is a wasteful number, since it uses less digits than its factorization.

128481612480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9173 (or 9157 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The spelling of 128481612480 in words is "one hundred twenty-eight billion, four hundred eighty-one million, six hundred twelve thousand, four hundred eighty".