28605633187 has 2 divisors, whose sum is σ = 28605633188. Its totient is φ = 28605633186.

The previous prime is 28605633181. The next prime is 28605633193. The reversal of 28605633187 is 78133650682.

It is a balanced prime because it is at equal distance from previous prime (28605633181) and next prime (28605633193).

It is a cyclic number.

It is not a de Polignac number, because 28605633187 - 2²³ = 28597244579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28605633187.

It is not a weakly prime, because it can be changed into another prime (28605633181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14302816593 + 14302816594.

It is an arithmetic number, because the mean of its divisors is an integer number (14302816594).

Almost surely, 2^28605633187 is an apocalyptic number.

28605633187 is a deficient number, since it is larger than the sum of its proper divisors (1).

28605633187 is an equidigital number, since it uses as much as digits as its factorization.

28605633187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 28605633187 in words is "twenty-eight billion, six hundred five million, six hundred thirty-three thousand, one hundred eighty-seven".