530728813917 has 6 divisors (see below), whose sum is σ = 766608286782. Its totient is φ = 353819209272.

The previous prime is 530728813891. The next prime is 530728813957. The reversal of 530728813917 is 719318827035.

It is a happy number.

530728813917 is a `hidden beast` number, since 530 + 7 + 2 + 8 + 8 + 13 + 91 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 521831419641 + 8897394276 = 722379^2 + 94326^2 .

It is not a de Polignac number, because 530728813917 - 2¹⁹ = 530728289629 is a prime.

It is a super-2 number, since 2×530728813917² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530728813957) 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, 29484934098 + ... + 29484934115.

It is an arithmetic number, because the mean of its divisors is an integer number (127768047797).

Almost surely, 2^530728813917 is an apocalyptic number.

It is an amenable number.

530728813917 is a deficient number, since it is larger than the sum of its proper divisors (235879472865).

530728813917 is a wasteful number, since it uses less digits than its factorization.

530728813917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58969868219 (or 58969868216 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 530728813917 in words is "five hundred thirty billion, seven hundred twenty-eight million, eight hundred thirteen thousand, nine hundred seventeen".