216485400764 has 12 divisors (see below), whose sum is σ = 379449851088. Its totient is φ = 108071157600.

The previous prime is 216485400743. The next prime is 216485400773. The reversal of 216485400764 is 467004584612.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42882857 + ... + 42887904.

It is an arithmetic number, because the mean of its divisors is an integer number (31620820924).

Almost surely, 2^216485400764 is an apocalyptic number.

It is an amenable number.

216485400764 is a deficient number, since it is larger than the sum of its proper divisors (162964450324).

216485400764 is a wasteful number, since it uses less digits than its factorization.

216485400764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85771396 (or 85771394 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 216485400764 in words is "two hundred sixteen billion, four hundred eighty-five million, four hundred thousand, seven hundred sixty-four".