106320421705 has 4 divisors (see below), whose sum is σ = 127584506052. Its totient is φ = 85056337360.

The previous prime is 106320421687. The next prime is 106320421747. The reversal of 106320421705 is 507124023601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60062735929 + 46257685776 = 245077^2 + 215076^2 .

It is not a de Polignac number, because 106320421705 - 2¹⁷ = 106320290633 is a prime.

It is a super-2 number, since 2×106320421705² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10632042166 + ... + 10632042175.

It is an arithmetic number, because the mean of its divisors is an integer number (31896126513).

Almost surely, 2^106320421705 is an apocalyptic number.

It is an amenable number.

106320421705 is a deficient number, since it is larger than the sum of its proper divisors (21264084347).

106320421705 is an equidigital number, since it uses as much as digits as its factorization.

106320421705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21264084346.

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 106320421705 in words is "one hundred six billion, three hundred twenty million, four hundred twenty-one thousand, seven hundred five".