12813501305 has 24 divisors (see below), whose sum is σ = 16913667456. Its totient is φ = 9311989280.

The previous prime is 12813501293. The next prime is 12813501347. The reversal of 12813501305 is 50310531821.

It is a happy number.

It is not a de Polignac number, because 12813501305 - 2⁸ = 12813501049 is a prime.

It is a super-3 number, since 3×12813501305³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 892514 + ... + 906756.

It is an arithmetic number, because the mean of its divisors is an integer number (704736144).

Almost surely, 2^12813501305 is an apocalyptic number.

It is an amenable number.

12813501305 is a deficient number, since it is larger than the sum of its proper divisors (4100166151).

12813501305 is a wasteful number, since it uses less digits than its factorization.

12813501305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15757 (or 15746 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 12813501305 in words is "twelve billion, eight hundred thirteen million, five hundred one thousand, three hundred five".