216205353448 has 48 divisors (see below), whose sum is σ = 472020790500. Its totient is φ = 92570929920.

The previous prime is 216205353437. The next prime is 216205353461. The reversal of 216205353448 is 844353502612.

216205353448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 213482809764 + 2722543684 = 462042^2 + 52178^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148318 + ... + 674098.

Almost surely, 2^216205353448 is an apocalyptic number.

216205353448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

216205353448 is an abundant number, since it is smaller than the sum of its proper divisors (255815437052).

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

216205353448 is a wasteful number, since it uses less digits than its factorization.

216205353448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526850 (or 526839 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 216205353448 in words is "two hundred sixteen billion, two hundred five million, three hundred fifty-three thousand, four hundred forty-eight".