12535304420 has 24 divisors (see below), whose sum is σ = 26340095544. Its totient is φ = 5011082496.

The previous prime is 12535304389. The next prime is 12535304443. The reversal of 12535304420 is 2440353521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43665664 + 12491638756 = 6608^2 + 111766^2 .

It is a super-3 number, since 3×12535304420³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155987 + ... + 222266.

It is an arithmetic number, because the mean of its divisors is an integer number (1097503981).

Almost surely, 2^12535304420 is an apocalyptic number.

12535304420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12535304420 is an abundant number, since it is smaller than the sum of its proper divisors (13804791124).

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

12535304420 is a wasteful number, since it uses less digits than its factorization.

12535304420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379919 (or 379917 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 12535304420 its reverse (2440353521), we get a palindrome (14975657941).

The spelling of 12535304420 in words is "twelve billion, five hundred thirty-five million, three hundred four thousand, four hundred twenty".