28568462501 has 2 divisors, whose sum is σ = 28568462502. Its totient is φ = 28568462500.

The previous prime is 28568462441. The next prime is 28568462537. The reversal of 28568462501 is 10526486582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24892950625 + 3675511876 = 157775^2 + 60626^2 .

It is a cyclic number.

It is not a de Polignac number, because 28568462501 - 2⁶ = 28568462437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28568462401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14284231250 + 14284231251.

It is an arithmetic number, because the mean of its divisors is an integer number (14284231251).

Almost surely, 2^28568462501 is an apocalyptic number.

It is an amenable number.

28568462501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28568462501 is an equidigital number, since it uses as much as digits as its factorization.

28568462501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921600, while the sum is 47.

The spelling of 28568462501 in words is "twenty-eight billion, five hundred sixty-eight million, four hundred sixty-two thousand, five hundred one".