28065128735403 has 6 divisors (see below), whose sum is σ = 40538519284484. Its totient is φ = 18710085823596.

The previous prime is 28065128735377. The next prime is 28065128735429. The reversal of 28065128735403 is 30453782156082.

28065128735403 is a `hidden beast` number, since 2 + 8 + 0 + 6 + 5 + 1 + 28 + 73 + 540 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (28065128735377) and next prime (28065128735429).

It is not a de Polignac number, because 28065128735403 - 2²² = 28065124541099 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 28065128735403.

It is not an unprimeable number, because it can be changed into a prime (28065128735453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1559173818625 + ... + 1559173818642.

Almost surely, 2^{28065128735403} is an apocalyptic number.

28065128735403 is a deficient number, since it is larger than the sum of its proper divisors (12473390549081).

28065128735403 is a wasteful number, since it uses less digits than its factorization.

28065128735403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118347637273 (or 3118347637270 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 28065128735403 in words is "twenty-eight trillion, sixty-five billion, one hundred twenty-eight million, seven hundred thirty-five thousand, four hundred three".