18571023045 has 48 divisors (see below), whose sum is σ = 33351692400. Its totient is φ = 9548098560.

The previous prime is 18571023043. The next prime is 18571023127. The reversal of 18571023045 is 54032017581.

18571023045 is a `hidden beast` number, since 18 + 571 + 0 + 2 + 30 + 45 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 135629316 + 18435393729 = 11646^2 + 135777^2 .

It is not a de Polignac number, because 18571023045 - 2¹ = 18571023043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18571023043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 851841 + ... + 873369.

It is an arithmetic number, because the mean of its divisors is an integer number (694826925).

Almost surely, 2^18571023045 is an apocalyptic number.

18571023045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18571023045 is a deficient number, since it is larger than the sum of its proper divisors (14780669355).

18571023045 is a wasteful number, since it uses less digits than its factorization.

18571023045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22230 (or 22227 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 18571023045 in words is "eighteen billion, five hundred seventy-one million, twenty-three thousand, forty-five".