18662662144 has 168 divisors, whose sum is σ = 45720365760. Its totient is φ = 7574224896.

The previous prime is 18662662111. The next prime is 18662662159. The reversal of 18662662144 is 44126626681.

It is a super-3 number, since 3×18662662144³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18662662094 and 18662662103.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7625529 + ... + 7627975.

Almost surely, 2^18662662144 is an apocalyptic number.

18662662144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18662662144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22860182880).

18662662144 is an abundant number, since it is smaller than the sum of its proper divisors (27057703616).

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

18662662144 is an equidigital number, since it uses as much as digits as its factorization.

18662662144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506 (or 2475 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The spelling of 18662662144 in words is "eighteen billion, six hundred sixty-two million, six hundred sixty-two thousand, one hundred forty-four".