89106028261 has 2 divisors, whose sum is σ = 89106028262. Its totient is φ = 89106028260.

The previous prime is 89106028213. The next prime is 89106028267. The reversal of 89106028261 is 16282060198.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72301832100 + 16804196161 = 268890^2 + 129631^2 .

It is a cyclic number.

It is not a de Polignac number, because 89106028261 - 2¹¹ = 89106026213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89106028267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44553014130 + 44553014131.

It is an arithmetic number, because the mean of its divisors is an integer number (44553014131).

Almost surely, 2^89106028261 is an apocalyptic number.

It is an amenable number.

89106028261 is a deficient number, since it is larger than the sum of its proper divisors (1).

89106028261 is an equidigital number, since it uses as much as digits as its factorization.

89106028261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 89106028261 in words is "eighty-nine billion, one hundred six million, twenty-eight thousand, two hundred sixty-one".