216522416502 has 192 divisors, whose sum is σ = 575352460800. Its totient is φ = 57478118400.

The previous prime is 216522416477. The next prime is 216522416503. The reversal of 216522416502 is 205614225612.

216522416502 is a `hidden beast` number, since 216 + 5 + 22 + 416 + 5 + 0 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216522416503) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25867774 + ... + 25876142.

It is an arithmetic number, because the mean of its divisors is an integer number (2996627400).

Almost surely, 2^216522416502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216522416502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287676230400).

216522416502 is an abundant number, since it is smaller than the sum of its proper divisors (358830044298).

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

216522416502 is a wasteful number, since it uses less digits than its factorization.

216522416502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8611 (or 8608 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 216522416502 in words is "two hundred sixteen billion, five hundred twenty-two million, four hundred sixteen thousand, five hundred two".