830105307505 has 4 divisors (see below), whose sum is σ = 996126369012. Its totient is φ = 664084246000.

The previous prime is 830105307467. The next prime is 830105307527. The reversal of 830105307505 is 505703501038.

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 407135877184 + 422969430321 = 638072^2 + 650361^2 .

It is not a de Polignac number, because 830105307505 - 2¹¹ = 830105305457 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, 83010530746 + ... + 83010530755.

It is an arithmetic number, because the mean of its divisors is an integer number (249031592253).

Almost surely, 2^830105307505 is an apocalyptic number.

It is an amenable number.

830105307505 is a deficient number, since it is larger than the sum of its proper divisors (166021061507).

830105307505 is a wasteful number, since it uses less digits than its factorization.

830105307505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166021061506.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 830105307505 in words is "eight hundred thirty billion, one hundred five million, three hundred seven thousand, five hundred five".