18518546716 has 24 divisors (see below), whose sum is σ = 32715144000. Its totient is φ = 9171417024.

The previous prime is 18518546659. The next prime is 18518546729. The reversal of 18518546716 is 61764581581.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2192790 + ... + 2201218.

It is an arithmetic number, because the mean of its divisors is an integer number (1363131000).

Almost surely, 2^18518546716 is an apocalyptic number.

It is an amenable number.

18518546716 is a deficient number, since it is larger than the sum of its proper divisors (14196597284).

18518546716 is a wasteful number, since it uses less digits than its factorization.

18518546716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13581 (or 13579 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 52.

The spelling of 18518546716 in words is "eighteen billion, five hundred eighteen million, five hundred forty-six thousand, seven hundred sixteen".