216261344992 has 96 divisors (see below), whose sum is σ = 545170106880. Its totient is φ = 81980398080.

The previous prime is 216261344903. The next prime is 216261344993. The reversal of 216261344992 is 299443162612.

216261344992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216261344993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1094892 + ... + 1277227.

It is an arithmetic number, because the mean of its divisors is an integer number (5678855280).

Almost surely, 2^216261344992 is an apocalyptic number.

216261344992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

216261344992 is an abundant number, since it is smaller than the sum of its proper divisors (328908761888).

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

216261344992 is a wasteful number, since it uses less digits than its factorization.

216261344992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372184 (or 2372176 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The spelling of 216261344992 in words is "two hundred sixteen billion, two hundred sixty-one million, three hundred forty-four thousand, nine hundred ninety-two".