28758056059457 has 2 divisors, whose sum is σ = 28758056059458. Its totient is φ = 28758056059456.

The previous prime is 28758056059399. The next prime is 28758056059459. The reversal of 28758056059457 is 75495065085782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27954494414401 + 803561645056 = 5287201^2 + 896416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28758056059457 is a prime.

Together with 28758056059459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28758056059459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14379028029728 + 14379028029729.

It is an arithmetic number, because the mean of its divisors is an integer number (14379028029729).

Almost surely, 2^{28758056059457} is an apocalyptic number.

It is an amenable number.

28758056059457 is a deficient number, since it is larger than the sum of its proper divisors (1).

28758056059457 is an equidigital number, since it uses as much as digits as its factorization.

28758056059457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846720000, while the sum is 71.

The spelling of 28758056059457 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-six million, fifty-nine thousand, four hundred fifty-seven".