9128138630263 has 4 divisors (see below), whose sum is σ = 9135017409760. Its totient is φ = 9121259850768.

The previous prime is 9128138630201. The next prime is 9128138630267. The reversal of 9128138630263 is 3620368318219.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9128138630263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9128138630263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9128138630267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439387758 + ... + 3439390411.

It is an arithmetic number, because the mean of its divisors is an integer number (2283754352440).

Almost surely, 2^{9128138630263} is an apocalyptic number.

9128138630263 is a deficient number, since it is larger than the sum of its proper divisors (6878779497).

9128138630263 is a wasteful number, since it uses less digits than its factorization.

9128138630263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6878779496.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 9128138630263 in words is "nine trillion, one hundred twenty-eight billion, one hundred thirty-eight million, six hundred thirty thousand, two hundred sixty-three".