15428366809 has 2 divisors, whose sum is σ = 15428366810. Its totient is φ = 15428366808.

The previous prime is 15428366801. The next prime is 15428366831. The reversal of 15428366809 is 90866382451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15337584025 + 90782784 = 123845^2 + 9528^2 .

It is a cyclic number.

It is not a de Polignac number, because 15428366809 - 2³ = 15428366801 is a prime.

It is not a weakly prime, because it can be changed into another prime (15428366801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7714183404 + 7714183405.

It is an arithmetic number, because the mean of its divisors is an integer number (7714183405).

Almost surely, 2^15428366809 is an apocalyptic number.

It is an amenable number.

15428366809 is a deficient number, since it is larger than the sum of its proper divisors (1).

15428366809 is an equidigital number, since it uses as much as digits as its factorization.

15428366809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 15428366809 in words is "fifteen billion, four hundred twenty-eight million, three hundred sixty-six thousand, eight hundred nine".