4181378804963 has 4 divisors (see below), whose sum is σ = 4181382894648. Its totient is φ = 4181374715280.

The previous prime is 4181378804929. The next prime is 4181378805031. The reversal of 4181378804963 is 3694088731814.

It is a Cunningham number, because it is equal to 2044842²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4181378804963 - 2¹⁰ = 4181378803939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4181378804896 and 4181378804905.

It is not an unprimeable number, because it can be changed into a prime (4181378804063) 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 3 ways as a sum of consecutive naturals, for example, 1022420 + ... + 3067262.

It is an arithmetic number, because the mean of its divisors is an integer number (1045345723662).

Almost surely, 2^{4181378804963} is an apocalyptic number.

4181378804963 is a deficient number, since it is larger than the sum of its proper divisors (4089685).

4181378804963 is a wasteful number, since it uses less digits than its factorization.

4181378804963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089684.

The product of its (nonzero) digits is 27869184, while the sum is 62.

The spelling of 4181378804963 in words is "four trillion, one hundred eighty-one billion, three hundred seventy-eight million, eight hundred four thousand, nine hundred sixty-three".