18461633616481 has 8 divisors (see below), whose sum is σ = 20140564162464. Its totient is φ = 16782803106720.

The previous prime is 18461633616469. The next prime is 18461633616497.

It is a happy number.

18461633616481 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 18461633616481 - 2¹¹ = 18461633614433 is a prime.

It is a super-2 number, since 2×18461633616481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18461633610481) 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, 24622915 + ... + 25361608.

It is an arithmetic number, because the mean of its divisors is an integer number (2517570520308).

Almost surely, 2^{18461633616481} is an apocalyptic number.

18461633616481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18461633616481 is a deficient number, since it is larger than the sum of its proper divisors (1678930545983).

18461633616481 is a wasteful number, since it uses less digits than its factorization.

18461633616481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50018111.

The product of its digits is 11943936, while the sum is 58.

The spelling of 18461633616481 in words is "eighteen trillion, four hundred sixty-one billion, six hundred thirty-three million, six hundred sixteen thousand, four hundred eighty-one".