18273121076 has 12 divisors (see below), whose sum is σ = 36546242208. Its totient is φ = 7831337592.

The previous prime is 18273121043. The next prime is 18273121147. The reversal of 18273121076 is 67012137281.

18273121076 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326305706 + ... + 326305761.

It is an arithmetic number, because the mean of its divisors is an integer number (3045520184).

Almost surely, 2^18273121076 is an apocalyptic number.

It is an amenable number.

18273121076 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18273121076 is a wasteful number, since it uses less digits than its factorization.

18273121076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652611478 (or 652611476 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 18273121076 in words is "eighteen billion, two hundred seventy-three million, one hundred twenty-one thousand, seventy-six".