18441555514481 has 8 divisors (see below), whose sum is σ = 20136986313024. Its totient is φ = 16749279007920.

The previous prime is 18441555514399. The next prime is 18441555514493.

18441555514481 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18441555514481 - 2¹⁰ = 18441555513457 is a prime.

It is a super-2 number, since 2×18441555514481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18441555516481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788560766 + ... + 788584151.

It is an arithmetic number, because the mean of its divisors is an integer number (2517123289128).

Almost surely, 2^{18441555514481} is an apocalyptic number.

18441555514481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18441555514481 is a deficient number, since it is larger than the sum of its proper divisors (1695430798543).

18441555514481 is a wasteful number, since it uses less digits than its factorization.

18441555514481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577145991.

The product of its digits is 10240000, while the sum is 56.

The spelling of 18441555514481 in words is "eighteen trillion, four hundred forty-one billion, five hundred fifty-five million, five hundred fourteen thousand, four hundred eighty-one".