82604709281 has 2 divisors, whose sum is σ = 82604709282. Its totient is φ = 82604709280.

The previous prime is 82604709259. The next prime is 82604709349. The reversal of 82604709281 is 18290740628.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74999299600 + 7605409681 = 273860^2 + 87209^2 .

It is a cyclic number.

It is not a de Polignac number, because 82604709281 - 2³⁴ = 65424840097 is a prime.

It is a super-2 number, since 2×82604709281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (82604739281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41302354640 + 41302354641.

It is an arithmetic number, because the mean of its divisors is an integer number (41302354641).

Almost surely, 2^82604709281 is an apocalyptic number.

It is an amenable number.

82604709281 is a deficient number, since it is larger than the sum of its proper divisors (1).

82604709281 is an equidigital number, since it uses as much as digits as its factorization.

82604709281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 82604709281 in words is "eighty-two billion, six hundred four million, seven hundred nine thousand, two hundred eighty-one".