12815235251 has 8 divisors (see below), whose sum is σ = 15772597344. Its totient is φ = 10139526720.

The previous prime is 12815235221. The next prime is 12815235259. The reversal of 12815235251 is 15253251821.

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

It is a cyclic number.

It is not a de Polignac number, because 12815235251 - 2¹⁸ = 12814973107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12815235259) 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, 70413290 + ... + 70413471.

It is an arithmetic number, because the mean of its divisors is an integer number (1971574668).

Almost surely, 2^12815235251 is an apocalyptic number.

12815235251 is a deficient number, since it is larger than the sum of its proper divisors (2957362093).

12815235251 is a wasteful number, since it uses less digits than its factorization.

12815235251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140826781.

The product of its digits is 24000, while the sum is 35.

The spelling of 12815235251 in words is "twelve billion, eight hundred fifteen million, two hundred thirty-five thousand, two hundred fifty-one".