216974713536 has 168 divisors, whose sum is σ = 711390910464. Its totient is φ = 61938132480.

The previous prime is 216974713511. The next prime is 216974713561. The reversal of 216974713536 is 635317479612.

216974713536 is a `hidden beast` number, since 2 + 1 + 6 + 97 + 4 + 7 + 13 + 536 = 666.

It is an interprime number because it is at equal distance from previous prime (216974713511) and next prime (216974713561).

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4666081 + ... + 4712351.

Almost surely, 2^216974713536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216974713536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355695455232).

216974713536 is an abundant number, since it is smaller than the sum of its proper divisors (494416196928).

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

216974713536 is a wasteful number, since it uses less digits than its factorization.

216974713536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47459 (or 47446 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The spelling of 216974713536 in words is "two hundred sixteen billion, nine hundred seventy-four million, seven hundred thirteen thousand, five hundred thirty-six".