216496919796 has 12 divisors (see below), whose sum is σ = 505159479552. Its totient is φ = 72165639928.

The previous prime is 216496919791. The next prime is 216496919831. The reversal of 216496919796 is 697919694612.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 216496919796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216496919791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9020704980 + ... + 9020705003.

It is an arithmetic number, because the mean of its divisors is an integer number (42096623296).

Almost surely, 2^216496919796 is an apocalyptic number.

It is an amenable number.

216496919796 is an abundant number, since it is smaller than the sum of its proper divisors (288662559756).

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

216496919796 is a wasteful number, since it uses less digits than its factorization.

216496919796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18041409990 (or 18041409988 counting only the distinct ones).

The product of its digits is 79361856, while the sum is 69.

The spelling of 216496919796 in words is "two hundred sixteen billion, four hundred ninety-six million, nine hundred nineteen thousand, seven hundred ninety-six".