3861863553823 has 16 divisors (see below), whose sum is σ = 4452343943040. Its totient is φ = 3312755820000.

The previous prime is 3861863553787. The next prime is 3861863553839. The reversal of 3861863553823 is 3283553681683.

It is a de Polignac number, because none of the positive numbers 2^k-3861863553823 is a prime.

It is a super-2 number, since 2×3861863553823² (a number of 26 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 (3861863353823) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 36755940 + ... + 36860857.

It is an arithmetic number, because the mean of its divisors is an integer number (278271496440).

Almost surely, 2^{3861863553823} is an apocalyptic number.

3861863553823 is a deficient number, since it is larger than the sum of its proper divisors (590480389217).

3861863553823 is a wasteful number, since it uses less digits than its factorization.

3861863553823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73617078.

The product of its digits is 74649600, while the sum is 61.

The spelling of 3861863553823 in words is "three trillion, eight hundred sixty-one billion, eight hundred sixty-three million, five hundred fifty-three thousand, eight hundred twenty-three".