216262847307205 has 16 divisors (see below), whose sum is σ = 262207010625840. Its totient is φ = 171216102039552.

The previous prime is 216262847307149. The next prime is 216262847307211. The reversal of 216262847307205 is 502703748262612.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 30032964694756 + 186229882612449 = 5480234^2 + 13646607^2 .

It is not a de Polignac number, because 216262847307205 - 2²¹ = 216262845210053 is a prime.

It is a congruent number.

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, 5882760 + ... + 21613249.

It is an arithmetic number, because the mean of its divisors is an integer number (16387938164115).

Almost surely, 2^{216262847307205} is an apocalyptic number.

It is an amenable number.

216262847307205 is a deficient number, since it is larger than the sum of its proper divisors (45944163318635).

216262847307205 is a wasteful number, since it uses less digits than its factorization.

216262847307205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27512328.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 216262847307205 in words is "two hundred sixteen trillion, two hundred sixty-two billion, eight hundred forty-seven million, three hundred seven thousand, two hundred five".