18270234017145 has 24 divisors (see below), whose sum is σ = 34547351596992. Its totient is φ = 8858295280800.

The previous prime is 18270234017143. The next prime is 18270234017239. The reversal of 18270234017145 is 54171043207281.

It is a happy number.

18270234017145 is a `hidden beast` number, since 1 + 8 + 270 + 234 + 0 + 1 + 7 + 145 = 666.

It is not a de Polignac number, because 18270234017145 - 2¹ = 18270234017143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18270234017145.

It is not an unprimeable number, because it can be changed into a prime (18270234017143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18454781341 + ... + 18454782330.

It is an arithmetic number, because the mean of its divisors is an integer number (1439472983208).

Almost surely, 2^{18270234017145} is an apocalyptic number.

18270234017145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18270234017145 is a deficient number, since it is larger than the sum of its proper divisors (16277117579847).

18270234017145 is a wasteful number, since it uses less digits than its factorization.

18270234017145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36909563693 (or 36909563690 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 18270234017145 in words is "eighteen trillion, two hundred seventy billion, two hundred thirty-four million, seventeen thousand, one hundred forty-five".