18024640475 has 6 divisors (see below), whose sum is σ = 22350554220. Its totient is φ = 14419712360.

The previous prime is 18024640471. The next prime is 18024640499. The reversal of 18024640475 is 57404642081.

It is not a de Polignac number, because 18024640475 - 2² = 18024640471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18024640471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360492785 + ... + 360492834.

It is an arithmetic number, because the mean of its divisors is an integer number (3725092370).

Almost surely, 2^18024640475 is an apocalyptic number.

18024640475 is a deficient number, since it is larger than the sum of its proper divisors (4325913745).

18024640475 is an equidigital number, since it uses as much as digits as its factorization.

18024640475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720985629 (or 720985624 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 18024640475 in words is "eighteen billion, twenty-four million, six hundred forty thousand, four hundred seventy-five".