3861863223845 has 32 divisors (see below), whose sum is σ = 5178694127616. Its totient is φ = 2740564411200.

The previous prime is 3861863223721. The next prime is 3861863223851. The reversal of 3861863223845 is 5483223681683.

It is a de Polignac number, because none of the positive numbers 2^k-3861863223845 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 (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1401089 + ... + 3112358.

It is an arithmetic number, because the mean of its divisors is an integer number (161834191488).

Almost surely, 2^{3861863223845} is an apocalyptic number.

It is an amenable number.

3861863223845 is a deficient number, since it is larger than the sum of its proper divisors (1316830903771).

3861863223845 is a wasteful number, since it uses less digits than its factorization.

3861863223845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4513841.

The product of its digits is 39813120, while the sum is 59.

The spelling of 3861863223845 in words is "three trillion, eight hundred sixty-one billion, eight hundred sixty-three million, two hundred twenty-three thousand, eight hundred forty-five".