18021147013719 has 8 divisors (see below), whose sum is σ = 26697995575920. Its totient is φ = 12014098009128.

The previous prime is 18021147013717. The next prime is 18021147013741. The reversal of 18021147013719 is 91731074112081.

18021147013719 is a `hidden beast` number, since 1 + 80 + 21 + 1 + 470 + 13 + 71 + 9 = 666.

It is not a de Polignac number, because 18021147013719 - 2¹ = 18021147013717 is a prime.

It is a super-2 number, since 2×18021147013719² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18021147013717) 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 7 ways as a sum of consecutive naturals, for example, 333724944672 + ... + 333724944725.

It is an arithmetic number, because the mean of its divisors is an integer number (3337249446990).

Almost surely, 2^{18021147013719} is an apocalyptic number.

18021147013719 is a deficient number, since it is larger than the sum of its proper divisors (8676848562201).

18021147013719 is an equidigital number, since it uses as much as digits as its factorization.

18021147013719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667449889406 (or 667449889400 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The spelling of 18021147013719 in words is "eighteen trillion, twenty-one billion, one hundred forty-seven million, thirteen thousand, seven hundred nineteen".