128485355736 has 32 divisors (see below), whose sum is σ = 338119358400. Its totient is φ = 40574322720.

The previous prime is 128485355701. The next prime is 128485355767. The reversal of 128485355736 is 637553584821.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140882610 + ... + 140883521.

It is an arithmetic number, because the mean of its divisors is an integer number (10566229950).

Almost surely, 2^128485355736 is an apocalyptic number.

It is an amenable number.

128485355736 is an abundant number, since it is smaller than the sum of its proper divisors (209634002664).

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

128485355736 is a wasteful number, since it uses less digits than its factorization.

128485355736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281766159 (or 281766155 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 57.

The spelling of 128485355736 in words is "one hundred twenty-eight billion, four hundred eighty-five million, three hundred fifty-five thousand, seven hundred thirty-six".