18047497744 has 20 divisors (see below), whose sum is σ = 34970111100. Its totient is φ = 9022952960.

The previous prime is 18047497723. The next prime is 18047497763. The reversal of 18047497744 is 44779474081.

It can be written as a sum of positive squares in 2 ways, for example, as 10213123600 + 7834374144 = 101060^2 + 88512^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 165564 + ... + 252004.

It is an arithmetic number, because the mean of its divisors is an integer number (1748505555).

Almost surely, 2^18047497744 is an apocalyptic number.

It is an amenable number.

18047497744 is a deficient number, since it is larger than the sum of its proper divisors (16922613356).

18047497744 is a wasteful number, since it uses less digits than its factorization.

18047497744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99498 (or 99492 counting only the distinct ones).

The product of its (nonzero) digits is 6322176, while the sum is 55.

The spelling of 18047497744 in words is "eighteen billion, forty-seven million, four hundred ninety-seven thousand, seven hundred forty-four".