18045522516 has 36 divisors (see below), whose sum is σ = 48124676768. Its totient is φ = 5155511808.

The previous prime is 18045522497. The next prime is 18045522527. The reversal of 18045522516 is 61522554081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1223860 + ... + 1238516.

Almost surely, 2^18045522516 is an apocalyptic number.

It is an amenable number.

18045522516 is an abundant number, since it is smaller than the sum of its proper divisors (30079154252).

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

18045522516 is an frugal number, since it uses more digits than its factorization.

18045522516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29328 (or 14669 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The spelling of 18045522516 in words is "eighteen billion, forty-five million, five hundred twenty-two thousand, five hundred sixteen".