216336351551321 has 48 divisors (see below), whose sum is σ = 243198817920000. Its totient is φ = 191863971129600.

The previous prime is 216336351551297. The next prime is 216336351551363. The reversal of 216336351551321 is 123155153633612.

It is not a de Polignac number, because 216336351551321 - 2³⁸ = 216061473644377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216336351551821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3626671346 + ... + 3626730996.

It is an arithmetic number, because the mean of its divisors is an integer number (5066642040000).

Almost surely, 2^{216336351551321} is an apocalyptic number.

It is an amenable number.

216336351551321 is a deficient number, since it is larger than the sum of its proper divisors (26862466368679).

216336351551321 is a wasteful number, since it uses less digits than its factorization.

216336351551321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63222 (or 63205 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 47.

The spelling of 216336351551321 in words is "two hundred sixteen trillion, three hundred thirty-six billion, three hundred fifty-one million, five hundred fifty-one thousand, three hundred twenty-one".