3518820563887 has 4 divisors (see below), whose sum is σ = 3524209263720. Its totient is φ = 3513431864056.

The previous prime is 3518820563809. The next prime is 3518820563917. The reversal of 3518820563887 is 7883650288153.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3518820563887 - 2¹⁹ = 3518820039599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3518820560887) 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, 2694348937 + ... + 2694350242.

It is an arithmetic number, because the mean of its divisors is an integer number (881052315930).

Almost surely, 2^{3518820563887} is an apocalyptic number.

3518820563887 is a deficient number, since it is larger than the sum of its proper divisors (5388699833).

3518820563887 is an equidigital number, since it uses as much as digits as its factorization.

3518820563887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388699832.

The product of its (nonzero) digits is 77414400, while the sum is 64.

The spelling of 3518820563887 in words is "three trillion, five hundred eighteen billion, eight hundred twenty million, five hundred sixty-three thousand, eight hundred eighty-seven".