82241890261 has 2 divisors, whose sum is σ = 82241890262. Its totient is φ = 82241890260.

The previous prime is 82241890121. The next prime is 82241890271. The reversal of 82241890261 is 16209814228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73535880625 + 8706009636 = 271175^2 + 93306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82241890261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82241890271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41120945130 + 41120945131.

It is an arithmetic number, because the mean of its divisors is an integer number (41120945131).

Almost surely, 2^82241890261 is an apocalyptic number.

It is an amenable number.

82241890261 is a deficient number, since it is larger than the sum of its proper divisors (1).

82241890261 is an equidigital number, since it uses as much as digits as its factorization.

82241890261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 43.

The spelling of 82241890261 in words is "eighty-two billion, two hundred forty-one million, eight hundred ninety thousand, two hundred sixty-one".