30782820073 has 2 divisors, whose sum is σ = 30782820074. Its totient is φ = 30782820072.

The previous prime is 30782820071. The next prime is 30782820121. The reversal of 30782820073 is 37002828703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24678210649 + 6104609424 = 157093^2 + 78132^2 .

It is a cyclic number.

It is not a de Polignac number, because 30782820073 - 2¹ = 30782820071 is a prime.

Together with 30782820071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30782820071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15391410036 + 15391410037.

It is an arithmetic number, because the mean of its divisors is an integer number (15391410037).

Almost surely, 2^30782820073 is an apocalyptic number.

It is an amenable number.

30782820073 is a deficient number, since it is larger than the sum of its proper divisors (1).

30782820073 is an equidigital number, since it uses as much as digits as its factorization.

30782820073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 30782820073 in words is "thirty billion, seven hundred eighty-two million, eight hundred twenty thousand, seventy-three".