12513313154 has 8 divisors (see below), whose sum is σ = 18773140620. Its totient is φ = 6255599616.

The previous prime is 12513313129. The next prime is 12513313157. The reversal of 12513313154 is 45131331521.

It can be written as a sum of positive squares in 2 ways, for example, as 12475773025 + 37540129 = 111695^2 + 6127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12513313157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513599 + ... + 537410.

Almost surely, 2^12513313154 is an apocalyptic number.

12513313154 is a deficient number, since it is larger than the sum of its proper divisors (6259827466).

12513313154 is a wasteful number, since it uses less digits than its factorization.

12513313154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056964.

The product of its digits is 5400, while the sum is 29.

Adding to 12513313154 its reverse (45131331521), we get a palindrome (57644644675).

The spelling of 12513313154 in words is "twelve billion, five hundred thirteen million, three hundred thirteen thousand, one hundred fifty-four".