89306564261 has 2 divisors, whose sum is σ = 89306564262. Its totient is φ = 89306564260.

The previous prime is 89306564233. The next prime is 89306564273. The reversal of 89306564261 is 16246560398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58997495236 + 30309069025 = 242894^2 + 174095^2 .

It is a cyclic number.

It is not a de Polignac number, because 89306564261 - 2⁶ = 89306564197 is a prime.

It is a super-4 number, since 4×89306564261⁴ (a number of 45 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 (89306594261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44653282130 + 44653282131.

It is an arithmetic number, because the mean of its divisors is an integer number (44653282131).

Almost surely, 2^89306564261 is an apocalyptic number.

It is an amenable number.

89306564261 is a deficient number, since it is larger than the sum of its proper divisors (1).

89306564261 is an equidigital number, since it uses as much as digits as its factorization.

89306564261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 89306564261 in words is "eighty-nine billion, three hundred six million, five hundred sixty-four thousand, two hundred sixty-one".