3868550021885 has 4 divisors (see below), whose sum is σ = 4642260026268. Its totient is φ = 3094840017504.

The previous prime is 3868550021873. The next prime is 3868550021899. The reversal of 3868550021885 is 5881200558683.

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

It can be written as a sum of positive squares in 2 ways, for example, as 846977858596 + 3021572163289 = 920314^2 + 1738267^2 .

It is a cyclic number.

It is not a de Polignac number, because 3868550021885 - 2⁸ = 3868550021629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 386855002184 + ... + 386855002193.

It is an arithmetic number, because the mean of its divisors is an integer number (1160565006567).

Almost surely, 2^{3868550021885} is an apocalyptic number.

It is an amenable number.

3868550021885 is a deficient number, since it is larger than the sum of its proper divisors (773710004383).

3868550021885 is an equidigital number, since it uses as much as digits as its factorization.

3868550021885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773710004382.

The product of its (nonzero) digits is 18432000, while the sum is 59.

The spelling of 3868550021885 in words is "three trillion, eight hundred sixty-eight billion, five hundred fifty million, twenty-one thousand, eight hundred eighty-five".