216623819492 has 48 divisors (see below), whose sum is σ = 400085021952. Its totient is φ = 102516556800.

The previous prime is 216623819389. The next prime is 216623819497. The reversal of 216623819492 is 294918326612.

It is not an unprimeable number, because it can be changed into a prime (216623819497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683828 + ... + 949140.

It is an arithmetic number, because the mean of its divisors is an integer number (8335104624).

Almost surely, 2^216623819492 is an apocalyptic number.

It is an amenable number.

216623819492 is a deficient number, since it is larger than the sum of its proper divisors (183461202460).

216623819492 is a wasteful number, since it uses less digits than its factorization.

216623819492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265508 (or 265506 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The spelling of 216623819492 in words is "two hundred sixteen billion, six hundred twenty-three million, eight hundred nineteen thousand, four hundred ninety-two".