28206944653 has 2 divisors, whose sum is σ = 28206944654. Its totient is φ = 28206944652.

The previous prime is 28206944621. The next prime is 28206944657. The reversal of 28206944653 is 35644960282.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28094117769 + 112826884 = 167613^2 + 10622^2 .

It is a cyclic number.

It is not a de Polignac number, because 28206944653 - 2⁵ = 28206944621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28206944597 and 28206944606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28206944657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14103472326 + 14103472327.

It is an arithmetic number, because the mean of its divisors is an integer number (14103472327).

Almost surely, 2^28206944653 is an apocalyptic number.

It is an amenable number.

28206944653 is a deficient number, since it is larger than the sum of its proper divisors (1).

28206944653 is an equidigital number, since it uses as much as digits as its factorization.

28206944653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 28206944653 in words is "twenty-eight billion, two hundred six million, nine hundred forty-four thousand, six hundred fifty-three".