105263345305 has 4 divisors (see below), whose sum is σ = 126316014372. Its totient is φ = 84210676240.

The previous prime is 105263345287. The next prime is 105263345351. The reversal of 105263345305 is 503543362501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503543362501 = 370571 ⋅1358831.

It can be written as a sum of positive squares in 2 ways, for example, as 43822816921 + 61440528384 = 209339^2 + 247872^2 .

It is not a de Polignac number, because 105263345305 - 2¹⁷ = 105263214233 is a prime.

It is a super-2 number, since 2×105263345305² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 10526334526 + ... + 10526334535.

It is an arithmetic number, because the mean of its divisors is an integer number (31579003593).

Almost surely, 2^105263345305 is an apocalyptic number.

It is an amenable number.

105263345305 is a deficient number, since it is larger than the sum of its proper divisors (21052669067).

105263345305 is an equidigital number, since it uses as much as digits as its factorization.

105263345305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21052669066.

The product of its (nonzero) digits is 162000, while the sum is 37.

The spelling of 105263345305 in words is "one hundred five billion, two hundred sixty-three million, three hundred forty-five thousand, three hundred five".