28437815597 has 2 divisors, whose sum is σ = 28437815598. Its totient is φ = 28437815596.

The previous prime is 28437815561. The next prime is 28437815669. The reversal of 28437815597 is 79551873482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28414496356 + 23319241 = 168566^2 + 4829^2 .

It is a cyclic number.

It is not a de Polignac number, because 28437815597 - 2¹⁴ = 28437799213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28437815557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14218907798 + 14218907799.

It is an arithmetic number, because the mean of its divisors is an integer number (14218907799).

Almost surely, 2^28437815597 is an apocalyptic number.

It is an amenable number.

28437815597 is a deficient number, since it is larger than the sum of its proper divisors (1).

28437815597 is an equidigital number, since it uses as much as digits as its factorization.

28437815597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 59.

The spelling of 28437815597 in words is "twenty-eight billion, four hundred thirty-seven million, eight hundred fifteen thousand, five hundred ninety-seven".