216613785552 has 40 divisors (see below), whose sum is σ = 560831961600. Its totient is φ = 72043776000.

The previous prime is 216613785533. The next prime is 216613785623. The reversal of 216613785552 is 255587316612.

It is a junction number, because it is equal to n+sod(n) for n = 216613785495 and 216613785504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5003824 + ... + 5046927.

It is an arithmetic number, because the mean of its divisors is an integer number (14020799040).

Almost surely, 2^216613785552 is an apocalyptic number.

It is an amenable number.

216613785552 is an abundant number, since it is smaller than the sum of its proper divisors (344218176048).

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

216613785552 is a wasteful number, since it uses less digits than its factorization.

216613785552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051211 (or 10051205 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 51.

The spelling of 216613785552 in words is "two hundred sixteen billion, six hundred thirteen million, seven hundred eighty-five thousand, five hundred fifty-two".