216172047307 has 2 divisors, whose sum is σ = 216172047308. Its totient is φ = 216172047306.

The previous prime is 216172047263. The next prime is 216172047313. The reversal of 216172047307 is 703740271612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216172047307 - 2³⁵ = 181812308939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216172047307.

It is not a weakly prime, because it can be changed into another prime (216172047337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108086023653 + 108086023654.

It is an arithmetic number, because the mean of its divisors is an integer number (108086023654).

Almost surely, 2^216172047307 is an apocalyptic number.

216172047307 is a deficient number, since it is larger than the sum of its proper divisors (1).

216172047307 is an equidigital number, since it uses as much as digits as its factorization.

216172047307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 98784, while the sum is 40.

The spelling of 216172047307 in words is "two hundred sixteen billion, one hundred seventy-two million, forty-seven thousand, three hundred seven".