2215872223816 has 32 divisors (see below), whose sum is σ = 4243272336000. Its totient is φ = 1084334187456.

The previous prime is 2215872223781. The next prime is 2215872223819. The reversal of 2215872223816 is 6183222785122.

It is a self number, because there is not a number n which added to its sum of digits gives 2215872223816.

It is not an unprimeable number, because it can be changed into a prime (2215872223819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23591875 + ... + 23685613.

It is an arithmetic number, because the mean of its divisors is an integer number (132602260500).

Almost surely, 2^{2215872223816} is an apocalyptic number.

It is an amenable number.

2215872223816 is a deficient number, since it is larger than the sum of its proper divisors (2027400112184).

2215872223816 is a wasteful number, since it uses less digits than its factorization.

2215872223816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156661 (or 156657 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The spelling of 2215872223816 in words is "two trillion, two hundred fifteen billion, eight hundred seventy-two million, two hundred twenty-three thousand, eight hundred sixteen".