18782846416431 has 12 divisors (see below), whose sum is σ = 27153368329360. Its totient is φ = 12511471377600.

The previous prime is 18782846416427. The next prime is 18782846416483. The reversal of 18782846416431 is 13461464828781.

18782846416431 is a `hidden beast` number, since 1 + 8 + 7 + 8 + 2 + 8 + 464 + 164 + 3 + 1 = 666.

It is not a de Polignac number, because 18782846416431 - 2² = 18782846416427 is a prime.

It is a super-2 number, since 2×18782846416431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18782846406431) 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 11 ways as a sum of consecutive naturals, for example, 868841371 + ... + 868862988.

Almost surely, 2^{18782846416431} is an apocalyptic number.

18782846416431 is a deficient number, since it is larger than the sum of its proper divisors (8370521912929).

18782846416431 is a wasteful number, since it uses less digits than its factorization.

18782846416431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737705566 (or 1737705563 counting only the distinct ones).

The product of its digits is 49545216, while the sum is 63.

The spelling of 18782846416431 in words is "eighteen trillion, seven hundred eighty-two billion, eight hundred forty-six million, four hundred sixteen thousand, four hundred thirty-one".