12861534835 has 8 divisors (see below), whose sum is σ = 15460593696. Its totient is φ = 10271393280.

The previous prime is 12861534799. The next prime is 12861534839. The reversal of 12861534835 is 53843516821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12861534835 - 2²³ = 12853146227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12861534839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2226151 + ... + 2231920.

It is an arithmetic number, because the mean of its divisors is an integer number (1932574212).

Almost surely, 2^12861534835 is an apocalyptic number.

12861534835 is a deficient number, since it is larger than the sum of its proper divisors (2599058861).

12861534835 is an equidigital number, since it uses as much as digits as its factorization.

12861534835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458653.

The product of its digits is 691200, while the sum is 46.

The spelling of 12861534835 in words is "twelve billion, eight hundred sixty-one million, five hundred thirty-four thousand, eight hundred thirty-five".