216312717005 has 72 divisors (see below), whose sum is σ = 336857671584. Its totient is φ = 132830470080.

The previous prime is 216312717001. The next prime is 216312717031. The reversal of 216312717005 is 500717213612.

It is not a de Polignac number, because 216312717005 - 2² = 216312717001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216312717001) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1931762 + ... + 2040668.

It is an arithmetic number, because the mean of its divisors is an integer number (4678578772).

Almost surely, 2^216312717005 is an apocalyptic number.

It is an amenable number.

216312717005 is a deficient number, since it is larger than the sum of its proper divisors (120544954579).

216312717005 is a wasteful number, since it uses less digits than its factorization.

216312717005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109015 (or 108997 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 216312717005 in words is "two hundred sixteen billion, three hundred twelve million, seven hundred seventeen thousand, five".