128785229046 has 32 divisors (see below), whose sum is σ = 291589204320. Its totient is φ = 42118438752.

The previous prime is 128785229039. The next prime is 128785229057. The reversal of 128785229046 is 640922587821.

128785229046 is a `hidden beast` number, since 1 + 2 + 8 + 78 + 522 + 9 + 0 + 46 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 128785228983 and 128785229001.

It is a congruent number.

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, 22496305 + ... + 22502028.

It is an arithmetic number, because the mean of its divisors is an integer number (9112162635).

Almost surely, 2^128785229046 is an apocalyptic number.

128785229046 is an abundant number, since it is smaller than the sum of its proper divisors (162803975274).

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

128785229046 is a wasteful number, since it uses less digits than its factorization.

128785229046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44998397 (or 44998391 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 128785229046 in words is "one hundred twenty-eight billion, seven hundred eighty-five million, two hundred twenty-nine thousand, forty-six".