216550535346 has 32 divisors (see below), whose sum is σ = 485895496320. Its totient is φ = 71482699152.

The previous prime is 216550535339. The next prime is 216550535393. The reversal of 216550535346 is 643535055612.

216550535346 is a `hidden beast` number, since 2 + 1 + 6 + 550 + 5 + 3 + 53 + 46 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19461405 + ... + 19472528.

It is an arithmetic number, because the mean of its divisors is an integer number (15184234260).

Almost surely, 2^216550535346 is an apocalyptic number.

216550535346 is an abundant number, since it is smaller than the sum of its proper divisors (269344960974).

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

216550535346 is a wasteful number, since it uses less digits than its factorization.

216550535346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38934047 (or 38934041 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 216550535346 in words is "two hundred sixteen billion, five hundred fifty million, five hundred thirty-five thousand, three hundred forty-six".