10402205305 has 4 divisors (see below), whose sum is σ = 12482646372. Its totient is φ = 8321764240.

The previous prime is 10402205273. The next prime is 10402205321. The reversal of 10402205305 is 50350220401.

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 1251178384 + 9151026921 = 35372^2 + 95661^2 .

It is not a de Polignac number, because 10402205305 - 2⁵ = 10402205273 is a prime.

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, 1040220526 + ... + 1040220535.

It is an arithmetic number, because the mean of its divisors is an integer number (3120661593).

Almost surely, 2^10402205305 is an apocalyptic number.

It is an amenable number.

10402205305 is a deficient number, since it is larger than the sum of its proper divisors (2080441067).

10402205305 is an equidigital number, since it uses as much as digits as its factorization.

10402205305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080441066.

The product of its (nonzero) digits is 1200, while the sum is 22.

Adding to 10402205305 its reverse (50350220401), we get a palindrome (60752425706).

The spelling of 10402205305 in words is "ten billion, four hundred two million, two hundred five thousand, three hundred five".