128763710215 has 32 divisors (see below), whose sum is σ = 187009409664. Its totient is φ = 83087278080.

The previous prime is 128763710213. The next prime is 128763710221. The reversal of 128763710215 is 512017367821.

It is not a de Polignac number, because 128763710215 - 2¹ = 128763710213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128763710213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4422405 + ... + 4451425.

It is an arithmetic number, because the mean of its divisors is an integer number (5844044052).

Almost surely, 2^128763710215 is an apocalyptic number.

128763710215 is a deficient number, since it is larger than the sum of its proper divisors (58245699449).

128763710215 is a wasteful number, since it uses less digits than its factorization.

128763710215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36507.

The product of its (nonzero) digits is 141120, while the sum is 43.

The spelling of 128763710215 in words is "one hundred twenty-eight billion, seven hundred sixty-three million, seven hundred ten thousand, two hundred fifteen".