216550468424 has 8 divisors (see below), whose sum is σ = 406032128310. Its totient is φ = 108275234208.

The previous prime is 216550468417. The next prime is 216550468471. The reversal of 216550468424 is 424864055612.

It can be written as a sum of positive squares in only one way, i.e., 204114204100 + 12436264324 = 451790^2 + 111518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13534404269 + ... + 13534404284.

Almost surely, 2^216550468424 is an apocalyptic number.

It is an amenable number.

216550468424 is a deficient number, since it is larger than the sum of its proper divisors (189481659886).

216550468424 is a wasteful number, since it uses less digits than its factorization.

216550468424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27068808559 (or 27068808555 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 47.

The spelling of 216550468424 in words is "two hundred sixteen billion, five hundred fifty million, four hundred sixty-eight thousand, four hundred twenty-four".