18182173571136 has 441 divisors, whose sum is σ = 57147619881951. Its totient is φ = 5736212805888.

The previous prime is 18182173571099. The next prime is 18182173571183. The reversal of 18182173571136 is 63117537128181.

The square root of 18182173571136 is 4264056.

It is a perfect power (a square), and thus also a powerful number.

18182173571136 is a `hidden beast` number, since 1 + 8 + 18 + 21 + 7 + 3 + 571 + 1 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 17499685305 + ... + 17499686343.

Almost surely, 2^{18182173571136} is an apocalyptic number.

18182173571136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

18182173571136 is the 4264056-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18182173571136

18182173571136 is an abundant number, since it is smaller than the sum of its proper divisors (38965446310815).

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

18182173571136 is an frugal number, since it uses more digits than its factorization.

18182173571136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146 (or 1063 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 54.

The spelling of 18182173571136 in words is "eighteen trillion, one hundred eighty-two billion, one hundred seventy-three million, five hundred seventy-one thousand, one hundred thirty-six".