4216665437 has 2 divisors, whose sum is σ = 4216665438. Its totient is φ = 4216665436.

The previous prime is 4216665367. The next prime is 4216665617. The reversal of 4216665437 is 7345666124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4216424356 + 241081 = 64934^2 + 491^2 .

It is a cyclic number.

It is not a de Polignac number, because 4216665437 - 2⁸ = 4216665181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4216665137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2108332718 + 2108332719.

It is an arithmetic number, because the mean of its divisors is an integer number (2108332719).

Almost surely, 2^4216665437 is an apocalyptic number.

It is an amenable number.

4216665437 is a deficient number, since it is larger than the sum of its proper divisors (1).

4216665437 is an equidigital number, since it uses as much as digits as its factorization.

4216665437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 44.

The square root of 4216665437 is about 64935.8563276099. The cubic root of 4216665437 is about 1615.5598370944.

The spelling of 4216665437 in words is "four billion, two hundred sixteen million, six hundred sixty-five thousand, four hundred thirty-seven".