216382646480438 has 16 divisors (see below), whose sum is σ = 330065544774960. Its totient is φ = 106367143197216.

The previous prime is 216382646480359. The next prime is 216382646480479. The reversal of 216382646480438 is 834084646283612.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586175281 + ... + 1586311692.

It is an arithmetic number, because the mean of its divisors is an integer number (20629096548435).

Almost surely, 2^{216382646480438} is an apocalyptic number.

216382646480438 is a deficient number, since it is larger than the sum of its proper divisors (113682898294522).

216382646480438 is a wasteful number, since it uses less digits than its factorization.

216382646480438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172487551.

The product of its (nonzero) digits is 254803968, while the sum is 65.

The spelling of 216382646480438 in words is "two hundred sixteen trillion, three hundred eighty-two billion, six hundred forty-six million, four hundred eighty thousand, four hundred thirty-eight".