18712038581743 has 16 divisors (see below), whose sum is σ = 20563084271520. Its totient is φ = 16920799369344.

The previous prime is 18712038581741. The next prime is 18712038581767. The reversal of 18712038581743 is 34718583021781.

It is a happy number.

It is not a de Polignac number, because 18712038581743 - 2¹ = 18712038581741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18712038581741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20345073 + ... + 21244906.

It is an arithmetic number, because the mean of its divisors is an integer number (1285192766970).

Almost surely, 2^{18712038581743} is an apocalyptic number.

18712038581743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18712038581743 is a deficient number, since it is larger than the sum of its proper divisors (1851045689777).

18712038581743 is a wasteful number, since it uses less digits than its factorization.

18712038581743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41590698.

The product of its (nonzero) digits is 9031680, while the sum is 58.

The spelling of 18712038581743 in words is "eighteen trillion, seven hundred twelve billion, thirty-eight million, five hundred eighty-one thousand, seven hundred forty-three".