89257218173 has 2 divisors, whose sum is σ = 89257218174. Its totient is φ = 89257218172.

The previous prime is 89257218119. The next prime is 89257218181. The reversal of 89257218173 is 37181275298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68854809604 + 20402408569 = 262402^2 + 142837^2 .

It is a cyclic number.

It is not a de Polignac number, because 89257218173 - 2¹⁸ = 89256956029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89257218473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44628609086 + 44628609087.

It is an arithmetic number, because the mean of its divisors is an integer number (44628609087).

Almost surely, 2^89257218173 is an apocalyptic number.

It is an amenable number.

89257218173 is a deficient number, since it is larger than the sum of its proper divisors (1).

89257218173 is an equidigital number, since it uses as much as digits as its factorization.

89257218173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 53.

The spelling of 89257218173 in words is "eighty-nine billion, two hundred fifty-seven million, two hundred eighteen thousand, one hundred seventy-three".