216775677064 has 16 divisors (see below), whose sum is σ = 413117582220. Its totient is φ = 106610988480.

The previous prime is 216775677061. The next prime is 216775677077. The reversal of 216775677064 is 460776577612.

It can be written as a sum of positive squares in 2 ways, for example, as 170181000900 + 46594676164 = 412530^2 + 215858^2 .

It is not an unprimeable number, because it can be changed into a prime (216775677061) by changing a digit.

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, 222105739 + ... + 222106714.

Almost surely, 2^216775677064 is an apocalyptic number.

It is an amenable number.

216775677064 is a deficient number, since it is larger than the sum of its proper divisors (196341905156).

216775677064 is a wasteful number, since it uses less digits than its factorization.

216775677064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444212520 (or 444212516 counting only the distinct ones).

The product of its (nonzero) digits is 20744640, while the sum is 58.

The spelling of 216775677064 in words is "two hundred sixteen billion, seven hundred seventy-five million, six hundred seventy-seven thousand, sixty-four".