82021028653 has 2 divisors, whose sum is σ = 82021028654. Its totient is φ = 82021028652.

The previous prime is 82021028641. The next prime is 82021028659. The reversal of 82021028653 is 35682012028.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65473550884 + 16547477769 = 255878^2 + 128637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82021028653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82021028659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41010514326 + 41010514327.

It is an arithmetic number, because the mean of its divisors is an integer number (41010514327).

Almost surely, 2^82021028653 is an apocalyptic number.

It is an amenable number.

82021028653 is a deficient number, since it is larger than the sum of its proper divisors (1).

82021028653 is an equidigital number, since it uses as much as digits as its factorization.

82021028653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 82021028653 in words is "eighty-two billion, twenty-one million, twenty-eight thousand, six hundred fifty-three".