11031728517 has 6 divisors (see below), whose sum is σ = 15934718982. Its totient is φ = 7354485672.

The previous prime is 11031728473. The next prime is 11031728551. The reversal of 11031728517 is 71582713011.

11031728517 is a `hidden beast` number, since 1 + 103 + 17 + 28 + 517 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7360095681 + 3671632836 = 85791^2 + 60594^2 .

It is not a de Polignac number, because 11031728517 - 2⁸ = 11031728261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031728597) 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, 612873798 + ... + 612873815.

It is an arithmetic number, because the mean of its divisors is an integer number (2655786497).

Almost surely, 2^11031728517 is an apocalyptic number.

It is an amenable number.

11031728517 is a deficient number, since it is larger than the sum of its proper divisors (4902990465).

11031728517 is a wasteful number, since it uses less digits than its factorization.

11031728517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225747619 (or 1225747616 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

The spelling of 11031728517 in words is "eleven billion, thirty-one million, seven hundred twenty-eight thousand, five hundred seventeen".