18210563512 has 8 divisors (see below), whose sum is σ = 34144806600. Its totient is φ = 9105281752.

The previous prime is 18210563507. The next prime is 18210563531. The reversal of 18210563512 is 21536501281.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1138160212 + ... + 1138160227.

It is an arithmetic number, because the mean of its divisors is an integer number (4268100825).

Almost surely, 2^18210563512 is an apocalyptic number.

It is an amenable number.

18210563512 is a deficient number, since it is larger than the sum of its proper divisors (15934243088).

18210563512 is a wasteful number, since it uses less digits than its factorization.

18210563512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276320445 (or 2276320441 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 18210563512 in words is "eighteen billion, two hundred ten million, five hundred sixty-three thousand, five hundred twelve".