12535434123 has 8 divisors (see below), whose sum is σ = 16786899600. Its totient is φ = 8320462368.

The previous prime is 12535434101. The next prime is 12535434157. The reversal of 12535434123 is 32143453521.

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

It is not a de Polignac number, because 12535434123 - 2¹⁷ = 12535303051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12535434173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9122628 + ... + 9124001.

It is an arithmetic number, because the mean of its divisors is an integer number (2098362450).

Almost surely, 2^12535434123 is an apocalyptic number.

12535434123 is a deficient number, since it is larger than the sum of its proper divisors (4251465477).

12535434123 is a wasteful number, since it uses less digits than its factorization.

12535434123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18246861.

The product of its digits is 43200, while the sum is 33.

Adding to 12535434123 its reverse (32143453521), we get a palindrome (44678887644).

The spelling of 12535434123 in words is "twelve billion, five hundred thirty-five million, four hundred thirty-four thousand, one hundred twenty-three".