12810147585251 has 4 divisors (see below), whose sum is σ = 12811781332104. Its totient is φ = 12808513838400.

The previous prime is 12810147585241. The next prime is 12810147585281. The reversal of 12810147585251 is 15258574101821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12810147585251 - 2¹⁸ = 12810147323107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12810147585251.

It is not an unprimeable number, because it can be changed into a prime (12810147585211) 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, 816861665 + ... + 816877346.

It is an arithmetic number, because the mean of its divisors is an integer number (3202945333026).

Almost surely, 2^{12810147585251} is an apocalyptic number.

12810147585251 is a deficient number, since it is larger than the sum of its proper divisors (1633746853).

12810147585251 is an equidigital number, since it uses as much as digits as its factorization.

12810147585251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633746852.

The product of its (nonzero) digits is 896000, while the sum is 50.

The spelling of 12810147585251 in words is "twelve trillion, eight hundred ten billion, one hundred forty-seven million, five hundred eighty-five thousand, two hundred fifty-one".