28753202105857 has 2 divisors, whose sum is σ = 28753202105858. Its totient is φ = 28753202105856.

The previous prime is 28753202105851. The next prime is 28753202105867. The reversal of 28753202105857 is 75850120235782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25385081566321 + 3368120539536 = 5038361^2 + 1835244^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28753202105857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28753202105798 and 28753202105807.

It is not a weakly prime, because it can be changed into another prime (28753202105851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14376601052928 + 14376601052929.

It is an arithmetic number, because the mean of its divisors is an integer number (14376601052929).

Almost surely, 2^{28753202105857} is an apocalyptic number.

It is an amenable number.

28753202105857 is a deficient number, since it is larger than the sum of its proper divisors (1).

28753202105857 is an equidigital number, since it uses as much as digits as its factorization.

28753202105857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408000, while the sum is 55.

The spelling of 28753202105857 in words is "twenty-eight trillion, seven hundred fifty-three billion, two hundred two million, one hundred five thousand, eight hundred fifty-seven".