12515148140 has 48 divisors (see below), whose sum is σ = 28684726560. Its totient is φ = 4548794880.

The previous prime is 12515148137. The next prime is 12515148193. The reversal of 12515148140 is 4184151521.

12515148140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12515148140² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12515148097 and 12515148106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492056 + ... + 516864.

It is an arithmetic number, because the mean of its divisors is an integer number (597598470).

Almost surely, 2^12515148140 is an apocalyptic number.

12515148140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12515148140 is an abundant number, since it is smaller than the sum of its proper divisors (16169578420).

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

12515148140 is a wasteful number, since it uses less digits than its factorization.

12515148140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27122 (or 27120 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 32.

Adding to 12515148140 its reverse (4184151521), we get a palindrome (16699299661).

It can be divided in two parts, 125151481 and 40, that added together give a palindrome (125151521).

The spelling of 12515148140 in words is "twelve billion, five hundred fifteen million, one hundred forty-eight thousand, one hundred forty".