12135304734 has 32 divisors (see below), whose sum is σ = 27949591296. Its totient is φ = 3440760960.

The previous prime is 12135304721. The next prime is 12135304747. The reversal of 12135304734 is 43740353121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12135304721) and next prime (12135304747).

It is a junction number, because it is equal to n+sod(n) for n = 12135304695 and 12135304704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097307 + ... + 1108310.

It is an arithmetic number, because the mean of its divisors is an integer number (873424728).

Almost surely, 2^12135304734 is an apocalyptic number.

12135304734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12135304734 is an abundant number, since it is smaller than the sum of its proper divisors (15814286562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12135304734 is a wasteful number, since it uses less digits than its factorization.

12135304734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205760.

The product of its (nonzero) digits is 30240, while the sum is 33.

Adding to 12135304734 its reverse (43740353121), we get a palindrome (55875657855).

The spelling of 12135304734 in words is "twelve billion, one hundred thirty-five million, three hundred four thousand, seven hundred thirty-four".