28357530613 has 2 divisors, whose sum is σ = 28357530614. Its totient is φ = 28357530612.

The previous prime is 28357530601. The next prime is 28357530653. The reversal of 28357530613 is 31603575382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22813685764 + 5543844849 = 151042^2 + 74457^2 .

It is a cyclic number.

It is not a de Polignac number, because 28357530613 - 2¹³ = 28357522421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28357530613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28357530653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14178765306 + 14178765307.

It is an arithmetic number, because the mean of its divisors is an integer number (14178765307).

Almost surely, 2^28357530613 is an apocalyptic number.

It is an amenable number.

28357530613 is a deficient number, since it is larger than the sum of its proper divisors (1).

28357530613 is an equidigital number, since it uses as much as digits as its factorization.

28357530613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 28357530613 in words is "twenty-eight billion, three hundred fifty-seven million, five hundred thirty thousand, six hundred thirteen".