128976063717 has 16 divisors (see below), whose sum is σ = 178188301440. Its totient is φ = 82883610432.

The previous prime is 128976063703. The next prime is 128976063719. The reversal of 128976063717 is 717360679821.

It is a happy number.

It is not a de Polignac number, because 128976063717 - 2⁶ = 128976063653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128976063719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155873 + ... + 1262534.

It is an arithmetic number, because the mean of its divisors is an integer number (11136768840).

Almost surely, 2^128976063717 is an apocalyptic number.

It is an amenable number.

128976063717 is a deficient number, since it is larger than the sum of its proper divisors (49212237723).

128976063717 is a wasteful number, since it uses less digits than its factorization.

128976063717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419052.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 128976063717 in words is "one hundred twenty-eight billion, nine hundred seventy-six million, sixty-three thousand, seven hundred seventeen".