128394783276 has 48 divisors (see below), whose sum is σ = 301046054400. Its totient is φ = 42590155392.

The previous prime is 128394783241. The next prime is 128394783281. The reversal of 128394783276 is 672387493821.

It is a happy number.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5241465 + ... + 5265903.

It is an arithmetic number, because the mean of its divisors is an integer number (6271792800).

Almost surely, 2^128394783276 is an apocalyptic number.

It is an amenable number.

128394783276 is an abundant number, since it is smaller than the sum of its proper divisors (172651271124).

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

128394783276 is a wasteful number, since it uses less digits than its factorization.

128394783276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26558 (or 26556 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 60.

The spelling of 128394783276 in words is "one hundred twenty-eight billion, three hundred ninety-four million, seven hundred eighty-three thousand, two hundred seventy-six".