18327937554213 has 64 divisors (see below), whose sum is σ = 30796889088000. Its totient is φ = 9458493617664.

The previous prime is 18327937554197. The next prime is 18327937554253. The reversal of 18327937554213 is 31245573972381.

It is not a de Polignac number, because 18327937554213 - 2⁴ = 18327937554197 is a prime.

It is a super-2 number, since 2×18327937554213² (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 (18327937554253) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9110920 + ... + 10939137.

It is an arithmetic number, because the mean of its divisors is an integer number (481201392000).

Almost surely, 2^{18327937554213} is an apocalyptic number.

It is an amenable number.

18327937554213 is a deficient number, since it is larger than the sum of its proper divisors (12468951533787).

18327937554213 is a wasteful number, since it uses less digits than its factorization.

18327937554213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050194.

The product of its digits is 38102400, while the sum is 60.

The spelling of 18327937554213 in words is "eighteen trillion, three hundred twenty-seven billion, nine hundred thirty-seven million, five hundred fifty-four thousand, two hundred thirteen".