18331871155152 has 40 divisors (see below), whose sum is σ = 47424890728800. Its totient is φ = 6101906697600.

The previous prime is 18331871155141. The next prime is 18331871155159. The reversal of 18331871155152 is 25155117813381.

It is a super-2 number, since 2×18331871155152² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18331871155095 and 18331871155104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18331871155159) 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, 272372902 + ... + 272440197.

It is an arithmetic number, because the mean of its divisors is an integer number (1185622268220).

Almost surely, 2^{18331871155152} is an apocalyptic number.

18331871155152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18331871155152 is an abundant number, since it is smaller than the sum of its proper divisors (29093019573648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18331871155152 is a wasteful number, since it uses less digits than its factorization.

18331871155152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544813811 (or 544813805 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 51.

The spelling of 18331871155152 in words is "eighteen trillion, three hundred thirty-one billion, eight hundred seventy-one million, one hundred fifty-five thousand, one hundred fifty-two".