18840861204481 has 8 divisors (see below), whose sum is σ = 18856335680000. Its totient is φ = 18825387355008.

The previous prime is 18840861204449. The next prime is 18840861204493. The reversal of 18840861204481 is 18440216804881.

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 18840861204481 - 2⁵ = 18840861204449 is a prime.

It is a super-2 number, since 2×18840861204481² (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 (18840861204421) 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, 74672920 + ... + 74924806.

It is an arithmetic number, because the mean of its divisors is an integer number (2357041960000).

Almost surely, 2^{18840861204481} is an apocalyptic number.

It is an amenable number.

18840861204481 is a deficient number, since it is larger than the sum of its proper divisors (15474475519).

18840861204481 is a wasteful number, since it uses less digits than its factorization.

18840861204481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313023.

The product of its (nonzero) digits is 3145728, while the sum is 55.

The spelling of 18840861204481 in words is "eighteen trillion, eight hundred forty billion, eight hundred sixty-one million, two hundred four thousand, four hundred eighty-one".