30816228977 has 2 divisors, whose sum is σ = 30816228978. Its totient is φ = 30816228976.

The previous prime is 30816228881. The next prime is 30816229007. The reversal of 30816228977 is 77982261803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24020040256 + 6796188721 = 154984^2 + 82439^2 .

It is an emirp because it is prime and its reverse (77982261803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30816228977 - 2²⁰ = 30815180401 is a prime.

It is not a weakly prime, because it can be changed into another prime (30816222977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15408114488 + 15408114489.

It is an arithmetic number, because the mean of its divisors is an integer number (15408114489).

Almost surely, 2^30816228977 is an apocalyptic number.

It is an amenable number.

30816228977 is a deficient number, since it is larger than the sum of its proper divisors (1).

30816228977 is an equidigital number, since it uses as much as digits as its factorization.

30816228977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 30816228977 in words is "thirty billion, eight hundred sixteen million, two hundred twenty-eight thousand, nine hundred seventy-seven".