16320320077 has 2 divisors, whose sum is σ = 16320320078. Its totient is φ = 16320320076.

The previous prime is 16320320021. The next prime is 16320320183. The reversal of 16320320077 is 77002302361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10473270921 + 5847049156 = 102339^2 + 76466^2 .

It is an emirp because it is prime and its reverse (77002302361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16320320077 - 2¹¹ = 16320318029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16320320677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8160160038 + 8160160039.

It is an arithmetic number, because the mean of its divisors is an integer number (8160160039).

Almost surely, 2^16320320077 is an apocalyptic number.

It is an amenable number.

16320320077 is a deficient number, since it is larger than the sum of its proper divisors (1).

16320320077 is an equidigital number, since it uses as much as digits as its factorization.

16320320077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 31.

The spelling of 16320320077 in words is "sixteen billion, three hundred twenty million, three hundred twenty thousand, seventy-seven".