18630004066563 has 4 divisors (see below), whose sum is σ = 24840005422088. Its totient is φ = 12420002711040.

The previous prime is 18630004066547. The next prime is 18630004066571. The reversal of 18630004066563 is 36566040003681.

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

It is not a de Polignac number, because 18630004066563 - 2⁴ = 18630004066547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18630004066463) 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, 3105000677758 + ... + 3105000677763.

It is an arithmetic number, because the mean of its divisors is an integer number (6210001355522).

Almost surely, 2^{18630004066563} is an apocalyptic number.

18630004066563 is a deficient number, since it is larger than the sum of its proper divisors (6210001355525).

18630004066563 is an equidigital number, since it uses as much as digits as its factorization.

18630004066563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210001355524.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 18630004066563 in words is "eighteen trillion, six hundred thirty billion, four million, sixty-six thousand, five hundred sixty-three".