18454966945481 has 8 divisors (see below), whose sum is σ = 20433179142624. Its totient is φ = 16526836069920.

The previous prime is 18454966945427. The next prime is 18454966945483.

It is a happy number.

18454966945481 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 18454966945481 - 2¹⁴ = 18454966929097 is a prime.

It is a super-2 number, since 2×18454966945481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18454966945399 and 18454966945408.

It is not an unprimeable number, because it can be changed into a prime (18454966945483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12520329620 + ... + 12520331093.

It is an arithmetic number, because the mean of its divisors is an integer number (2554147392828).

Almost surely, 2^{18454966945481} is an apocalyptic number.

18454966945481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18454966945481 is a deficient number, since it is larger than the sum of its proper divisors (1978212197143).

18454966945481 is a wasteful number, since it uses less digits than its factorization.

18454966945481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25040660791.

The product of its digits is 1194393600, while the sum is 74.

The spelling of 18454966945481 in words is "eighteen trillion, four hundred fifty-four billion, nine hundred sixty-six million, nine hundred forty-five thousand, four hundred eighty-one".