12547818516 has 24 divisors (see below), whose sum is σ = 29280271104. Its totient is φ = 4182316480.

The previous prime is 12547818499. The next prime is 12547818533. The reversal of 12547818516 is 61581874521.

It is an interprime number because it is at equal distance from previous prime (12547818499) and next prime (12547818533).

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, 212701 + ... + 265211.

It is an arithmetic number, because the mean of its divisors is an integer number (1220011296).

Almost surely, 2^12547818516 is an apocalyptic number.

It is an amenable number.

12547818516 is an abundant number, since it is smaller than the sum of its proper divisors (16732452588).

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

12547818516 is a wasteful number, since it uses less digits than its factorization.

12547818516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72431 (or 72429 counting only the distinct ones).

The product of its digits is 537600, while the sum is 48.

The spelling of 12547818516 in words is "twelve billion, five hundred forty-seven million, eight hundred eighteen thousand, five hundred sixteen".