3816215181856 has 96 divisors (see below), whose sum is σ = 9860077624320. Its totient is φ = 1408582483200.

The previous prime is 3816215181851. The next prime is 3816215181893. The reversal of 3816215181856 is 6581815126183.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3816215181797 and 3816215181806.

It is not an unprimeable number, because it can be changed into a prime (3816215181851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40710780 + ... + 40804411.

It is an arithmetic number, because the mean of its divisors is an integer number (102709141920).

Almost surely, 2^{3816215181856} is an apocalyptic number.

It is an amenable number.

3816215181856 is an abundant number, since it is smaller than the sum of its proper divisors (6043862442464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3816215181856 is a wasteful number, since it uses less digits than its factorization.

3816215181856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81515238 (or 81515230 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 55.

The spelling of 3816215181856 in words is "three trillion, eight hundred sixteen billion, two hundred fifteen million, one hundred eighty-one thousand, eight hundred fifty-six".