15428308813 has 2 divisors, whose sum is σ = 15428308814. Its totient is φ = 15428308812.

The previous prime is 15428308799. The next prime is 15428308829. The reversal of 15428308813 is 31880382451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12724516809 + 2703792004 = 112803^2 + 51998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15428308813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15428308813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15428308513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7714154406 + 7714154407.

It is an arithmetic number, because the mean of its divisors is an integer number (7714154407).

Almost surely, 2^15428308813 is an apocalyptic number.

It is an amenable number.

15428308813 is a deficient number, since it is larger than the sum of its proper divisors (1).

15428308813 is an equidigital number, since it uses as much as digits as its factorization.

15428308813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 15428308813 in words is "fifteen billion, four hundred twenty-eight million, three hundred eight thousand, eight hundred thirteen".