128796047457 has 16 divisors (see below), whose sum is σ = 214102520832. Its totient is φ = 66907037520.

The previous prime is 128796047453. The next prime is 128796047467. The reversal of 128796047457 is 754740697821.

It is not a de Polignac number, because 128796047457 - 2² = 128796047453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128796047457.

It is not an unprimeable number, because it can be changed into a prime (128796047453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 278779093 + ... + 278779554.

It is an arithmetic number, because the mean of its divisors is an integer number (13381407552).

Almost surely, 2^128796047457 is an apocalyptic number.

It is an amenable number.

128796047457 is a deficient number, since it is larger than the sum of its proper divisors (85306473375).

128796047457 is a wasteful number, since it uses less digits than its factorization.

128796047457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557558668.

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 128796047457 in words is "one hundred twenty-eight billion, seven hundred ninety-six million, forty-seven thousand, four hundred fifty-seven".