12630505251 has 32 divisors (see below), whose sum is σ = 20820029440. Its totient is φ = 6632337024.

The previous prime is 12630505231. The next prime is 12630505271. The reversal of 12630505251 is 15250503621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12630505231) and next prime (12630505271).

It is not a de Polignac number, because 12630505251 - 2¹¹ = 12630503203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12630505211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42856 + ... + 164613.

It is an arithmetic number, because the mean of its divisors is an integer number (650625920).

Almost surely, 2^12630505251 is an apocalyptic number.

12630505251 is a deficient number, since it is larger than the sum of its proper divisors (8189524189).

12630505251 is a wasteful number, since it uses less digits than its factorization.

12630505251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207715.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 12630505251 in words is "twelve billion, six hundred thirty million, five hundred five thousand, two hundred fifty-one".