16506423301 has 2 divisors, whose sum is σ = 16506423302. Its totient is φ = 16506423300.

The previous prime is 16506423289. The next prime is 16506423341. The reversal of 16506423301 is 10332460561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12729706276 + 3776717025 = 112826^2 + 61455^2 .

It is an emirp because it is prime and its reverse (10332460561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16506423301 - 2²⁷ = 16372205573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16506423341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8253211650 + 8253211651.

It is an arithmetic number, because the mean of its divisors is an integer number (8253211651).

Almost surely, 2^16506423301 is an apocalyptic number.

It is an amenable number.

16506423301 is a deficient number, since it is larger than the sum of its proper divisors (1).

16506423301 is an equidigital number, since it uses as much as digits as its factorization.

16506423301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 16506423301 its reverse (10332460561), we get a palindrome (26838883862).

The spelling of 16506423301 in words is "sixteen billion, five hundred six million, four hundred twenty-three thousand, three hundred one".