216261112617 has 12 divisors (see below), whose sum is σ = 340775086704. Its totient is φ = 131067340920.

The previous prime is 216261112583. The next prime is 216261112621. The reversal of 216261112617 is 716211162612.

216261112617 is a `hidden beast` number, since 2 + 1 + 6 + 2 + 611 + 1 + 26 + 17 = 666.

It is not a de Polignac number, because 216261112617 - 2¹⁰ = 216261111593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216261112517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1092227743 + ... + 1092227940.

It is an arithmetic number, because the mean of its divisors is an integer number (28397923892).

Almost surely, 2^216261112617 is an apocalyptic number.

It is an amenable number.

216261112617 is a deficient number, since it is larger than the sum of its proper divisors (124513974087).

216261112617 is a wasteful number, since it uses less digits than its factorization.

216261112617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184455700 (or 2184455697 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The spelling of 216261112617 in words is "two hundred sixteen billion, two hundred sixty-one million, one hundred twelve thousand, six hundred seventeen".