88165874221 has 2 divisors, whose sum is σ = 88165874222. Its totient is φ = 88165874220.

The previous prime is 88165874201. The next prime is 88165874297. The reversal of 88165874221 is 12247856188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62243264196 + 25922610025 = 249486^2 + 161005^2 .

It is a cyclic number.

It is not a de Polignac number, because 88165874221 - 2⁵ = 88165874189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88165874201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44082937110 + 44082937111.

It is an arithmetic number, because the mean of its divisors is an integer number (44082937111).

Almost surely, 2^88165874221 is an apocalyptic number.

It is an amenable number.

88165874221 is a deficient number, since it is larger than the sum of its proper divisors (1).

88165874221 is an equidigital number, since it uses as much as digits as its factorization.

88165874221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1720320, while the sum is 52.

The spelling of 88165874221 in words is "eighty-eight billion, one hundred sixty-five million, eight hundred seventy-four thousand, two hundred twenty-one".