12135532535 has 16 divisors (see below), whose sum is σ = 17622017856. Its totient is φ = 7832007168.

The previous prime is 12135532489. The next prime is 12135532537. The reversal of 12135532535 is 53523553121.

It is a de Polignac number, because none of the positive numbers 2^k-12135532535 is a prime.

It is a super-2 number, since 2×12135532535² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12135532495 and 12135532504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12135532537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10197332 + ... + 10198521.

It is an arithmetic number, because the mean of its divisors is an integer number (1101376116).

Almost surely, 2^12135532535 is an apocalyptic number.

12135532535 is a deficient number, since it is larger than the sum of its proper divisors (5486485321).

12135532535 is a wasteful number, since it uses less digits than its factorization.

12135532535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20395882.

The product of its digits is 67500, while the sum is 35.

The spelling of 12135532535 in words is "twelve billion, one hundred thirty-five million, five hundred thirty-two thousand, five hundred thirty-five".