16239283217 has 2 divisors, whose sum is σ = 16239283218. Its totient is φ = 16239283216.

The previous prime is 16239283183. The next prime is 16239283219. The reversal of 16239283217 is 71238293261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14708595841 + 1530687376 = 121279^2 + 39124^2 .

It is a cyclic number.

It is not a de Polignac number, because 16239283217 - 2⁶ = 16239283153 is a prime.

Together with 16239283219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16239283219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8119641608 + 8119641609.

It is an arithmetic number, because the mean of its divisors is an integer number (8119641609).

Almost surely, 2^16239283217 is an apocalyptic number.

It is an amenable number.

16239283217 is a deficient number, since it is larger than the sum of its proper divisors (1).

16239283217 is an equidigital number, since it uses as much as digits as its factorization.

16239283217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The spelling of 16239283217 in words is "sixteen billion, two hundred thirty-nine million, two hundred eighty-three thousand, two hundred seventeen".