28605632399 has 2 divisors, whose sum is σ = 28605632400. Its totient is φ = 28605632398.

The previous prime is 28605632371. The next prime is 28605632411. The reversal of 28605632399 is 99323650682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28605632399 - 2²⁰ = 28604583823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28605632399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28605632329) 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, 14302816199 + 14302816200.

It is an arithmetic number, because the mean of its divisors is an integer number (14302816200).

Almost surely, 2^28605632399 is an apocalyptic number.

28605632399 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605632399 is an equidigital number, since it uses as much as digits as its factorization.

28605632399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 28605632399 in words is "twenty-eight billion, six hundred five million, six hundred thirty-two thousand, three hundred ninety-nine".