28912606897 has 2 divisors, whose sum is σ = 28912606898. Its totient is φ = 28912606896.

The previous prime is 28912606883. The next prime is 28912606927. The reversal of 28912606897 is 79860621982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28835096481 + 77510416 = 169809^2 + 8804^2 .

It is a cyclic number.

It is not a de Polignac number, because 28912606897 - 2⁷ = 28912606769 is a prime.

It is not a weakly prime, because it can be changed into another prime (28912606817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14456303448 + 14456303449.

It is an arithmetic number, because the mean of its divisors is an integer number (14456303449).

Almost surely, 2^28912606897 is an apocalyptic number.

It is an amenable number.

28912606897 is a deficient number, since it is larger than the sum of its proper divisors (1).

28912606897 is an equidigital number, since it uses as much as digits as its factorization.

28912606897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 28912606897 in words is "twenty-eight billion, nine hundred twelve million, six hundred six thousand, eight hundred ninety-seven".