216812190843 has 12 divisors (see below), whose sum is σ = 313372531368. Its totient is φ = 144449445120.

The previous prime is 216812190827. The next prime is 216812190851. The reversal of 216812190843 is 348091218612.

It is not a de Polignac number, because 216812190843 - 2⁴ = 216812190827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216812190823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7653030 + ... + 7681307.

It is an arithmetic number, because the mean of its divisors is an integer number (26114377614).

Almost surely, 2^216812190843 is an apocalyptic number.

216812190843 is a deficient number, since it is larger than the sum of its proper divisors (96560340525).

216812190843 is a wasteful number, since it uses less digits than its factorization.

216812190843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15335914 (or 15335911 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 216812190843 in words is "two hundred sixteen billion, eight hundred twelve million, one hundred ninety thousand, eight hundred forty-three".