12115415320 has 32 divisors (see below), whose sum is σ = 27280915920. Its totient is φ = 4842391680.

The previous prime is 12115415267. The next prime is 12115415321. The reversal of 12115415320 is 2351451121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115415321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65667 + ... + 168946.

Almost surely, 2^12115415320 is an apocalyptic number.

12115415320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12115415320 is an abundant number, since it is smaller than the sum of its proper divisors (15165500600).

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

12115415320 is a wasteful number, since it uses less digits than its factorization.

12115415320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235915 (or 235911 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 12115415320 its reverse (2351451121), we get a palindrome (14466866441).

The spelling of 12115415320 in words is "twelve billion, one hundred fifteen million, four hundred fifteen thousand, three hundred twenty".