128486762256 has 40 divisors (see below), whose sum is σ = 332404574944. Its totient is φ = 42766928640.

The previous prime is 128486762251. The next prime is 128486762269. The reversal of 128486762256 is 652267684821.

It is a junction number, because it is equal to n+sod(n) for n = 128486762196 and 128486762205.

It is not an unprimeable number, because it can be changed into a prime (128486762251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1903741 + ... + 1970076.

Almost surely, 2^128486762256 is an apocalyptic number.

128486762256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128486762256 is an abundant number, since it is smaller than the sum of its proper divisors (203917812688).

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

128486762256 is a wasteful number, since it uses less digits than its factorization.

128486762256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874519 (or 3874513 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 57.

The spelling of 128486762256 in words is "one hundred twenty-eight billion, four hundred eighty-six million, seven hundred sixty-two thousand, two hundred fifty-six".