216197893992 has 64 divisors (see below), whose sum is σ = 572343148800. Its totient is φ = 67820318720.

The previous prime is 216197893979. The next prime is 216197893999. The reversal of 216197893992 is 299398791612.

It is not an unprimeable number, because it can be changed into a prime (216197893999) 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, 6033184 + ... + 6068912.

It is an arithmetic number, because the mean of its divisors is an integer number (8942861700).

Almost surely, 2^216197893992 is an apocalyptic number.

It is an amenable number.

216197893992 is an abundant number, since it is smaller than the sum of its proper divisors (356145254808).

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

216197893992 is a wasteful number, since it uses less digits than its factorization.

216197893992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50586 (or 50582 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 66.

The spelling of 216197893992 in words is "two hundred sixteen billion, one hundred ninety-seven million, eight hundred ninety-three thousand, nine hundred ninety-two".