12510015320 has 32 divisors (see below), whose sum is σ = 30706402320. Its totient is φ = 4549096320.

The previous prime is 12510015319. The next prime is 12510015377. The reversal of 12510015320 is 2351001521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12510015292 and 12510015301.

It is a congruent number.

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, 14215487 + ... + 14216366.

Almost surely, 2^12510015320 is an apocalyptic number.

12510015320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12510015320 is an abundant number, since it is smaller than the sum of its proper divisors (18196387000).

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

12510015320 is a wasteful number, since it uses less digits than its factorization.

12510015320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28431875 (or 28431871 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 12510015320 its reverse (2351001521), we get a palindrome (14861016841).

The spelling of 12510015320 in words is "twelve billion, five hundred ten million, fifteen thousand, three hundred twenty".