12535861017 has 4 divisors (see below), whose sum is σ = 16714481360. Its totient is φ = 8357240676.

The previous prime is 12535861007. The next prime is 12535861111. The reversal of 12535861017 is 71016853521.

12535861017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12535861017 - 2⁷ = 12535860889 is a prime.

It is a super-2 number, since 2×12535861017² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12535861007) by changing a digit.

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, 2089310167 + ... + 2089310172.

It is an arithmetic number, because the mean of its divisors is an integer number (4178620340).

Almost surely, 2^12535861017 is an apocalyptic number.

It is an amenable number.

12535861017 is a deficient number, since it is larger than the sum of its proper divisors (4178620343).

12535861017 is an equidigital number, since it uses as much as digits as its factorization.

12535861017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178620342.

The product of its (nonzero) digits is 50400, while the sum is 39.

The spelling of 12535861017 in words is "twelve billion, five hundred thirty-five million, eight hundred sixty-one thousand, seventeen".