216486499608 has 64 divisors (see below), whose sum is σ = 612697672800. Its totient is φ = 70800612480.

The previous prime is 216486499591. The next prime is 216486499613. The reversal of 216486499608 is 806994684612.

216486499608 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 86 + 499 + 60 + 8 = 666.

216486499608 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 an unprimeable number.

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, 9443763 + ... + 9466658.

Almost surely, 2^216486499608 is an apocalyptic number.

It is an amenable number.

216486499608 is an abundant number, since it is smaller than the sum of its proper divisors (396211173192).

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

216486499608 is a wasteful number, since it uses less digits than its factorization.

216486499608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18910489 (or 18910479 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

It can be divided in two parts, 21648 and 6499608, that added together give a palindrome (6521256).

The spelling of 216486499608 in words is "two hundred sixteen billion, four hundred eighty-six million, four hundred ninety-nine thousand, six hundred eight".