12630640609898 has 4 divisors (see below), whose sum is σ = 18945960914850. Its totient is φ = 6315320304948.

The previous prime is 12630640609897. The next prime is 12630640609907. The reversal of 12630640609898 is 89890604603621.

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

It can be written as a sum of positive squares in only one way, i.e., 12559744624729 + 70895985169 = 3543973^2 + 266263^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12630640609898.

It is not an unprimeable number, because it can be changed into a prime (12630640609897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3157660152473 + ... + 3157660152476.

Almost surely, 2^{12630640609898} is an apocalyptic number.

12630640609898 is a deficient number, since it is larger than the sum of its proper divisors (6315320304952).

12630640609898 is an equidigital number, since it uses as much as digits as its factorization.

12630640609898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6315320304951.

The product of its (nonzero) digits is 26873856, while the sum is 62.

The spelling of 12630640609898 in words is "twelve trillion, six hundred thirty billion, six hundred forty million, six hundred nine thousand, eight hundred ninety-eight".