3861865276885 has 32 divisors (see below), whose sum is σ = 5780717280000. Its totient is φ = 2406160872960.

The previous prime is 3861865276837. The next prime is 3861865277003. The reversal of 3861865276885 is 5886725681683.

3861865276885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3861865276885 - 2¹³ = 3861865268693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1822960 + ... + 3323689.

It is an arithmetic number, because the mean of its divisors is an integer number (180647415000).

Almost surely, 2^{3861865276885} is an apocalyptic number.

3861865276885 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3861865276885 is a deficient number, since it is larger than the sum of its proper divisors (1918852003115).

3861865276885 is a wasteful number, since it uses less digits than its factorization.

3861865276885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148621.

The product of its digits is 928972800, while the sum is 73.

The spelling of 3861865276885 in words is "three trillion, eight hundred sixty-one billion, eight hundred sixty-five million, two hundred seventy-six thousand, eight hundred eighty-five".