216838118745 has 16 divisors (see below), whose sum is σ = 385489989120. Its totient is φ = 115646996592.

The previous prime is 216838118729. The next prime is 216838118801. The reversal of 216838118745 is 547811838612.

216838118745 is a `hidden beast` number, since 21 + 68 + 381 + 187 + 4 + 5 = 666.

It is not a de Polignac number, because 216838118745 - 2⁴ = 216838118729 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 216838118691 and 216838118700.

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, 803104009 + ... + 803104278.

It is an arithmetic number, because the mean of its divisors is an integer number (24093124320).

Almost surely, 2^216838118745 is an apocalyptic number.

It is an amenable number.

216838118745 is a deficient number, since it is larger than the sum of its proper divisors (168651870375).

216838118745 is a wasteful number, since it uses less digits than its factorization.

216838118745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606208301 (or 1606208295 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The spelling of 216838118745 in words is "two hundred sixteen billion, eight hundred thirty-eight million, one hundred eighteen thousand, seven hundred forty-five".