85843210234261 has 2 divisors, whose sum is σ = 85843210234262. Its totient is φ = 85843210234260.

The previous prime is 85843210234193. The next prime is 85843210234267. The reversal of 85843210234261 is 16243201234858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85604962767025 + 238247467236 = 9252295^2 + 488106^2 .

It is a cyclic number.

It is not a de Polignac number, because 85843210234261 - 2²⁵ = 85843176679829 is a prime.

It is a super-4 number, since 4×85843210234261⁴ (a number of 57 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85843210234267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42921605117130 + 42921605117131.

It is an arithmetic number, because the mean of its divisors is an integer number (42921605117131).

Almost surely, 2^{85843210234261} is an apocalyptic number.

It is an amenable number.

85843210234261 is a deficient number, since it is larger than the sum of its proper divisors (1).

85843210234261 is an equidigital number, since it uses as much as digits as its factorization.

85843210234261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 85843210234261 in words is "eighty-five trillion, eight hundred forty-three billion, two hundred ten million, two hundred thirty-four thousand, two hundred sixty-one".