18466956508 has 72 divisors (see below), whose sum is σ = 43629425280. Its totient is φ = 6641444160.

The previous prime is 18466956499. The next prime is 18466956533. The reversal of 18466956508 is 80565966481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125338 + ... + 229441.

It is an arithmetic number, because the mean of its divisors is an integer number (605964240).

Almost surely, 2^18466956508 is an apocalyptic number.

It is an amenable number.

18466956508 is an abundant number, since it is smaller than the sum of its proper divisors (25162468772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18466956508 is a wasteful number, since it uses less digits than its factorization.

18466956508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354827 (or 354812 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 18466956508 in words is "eighteen billion, four hundred sixty-six million, nine hundred fifty-six thousand, five hundred eight".