30820078879 has 2 divisors, whose sum is σ = 30820078880. Its totient is φ = 30820078878.

The previous prime is 30820078871. The next prime is 30820078931. The reversal of 30820078879 is 97887002803.

It is an a-pointer prime, because the next prime (30820078931) can be obtained adding 30820078879 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30820078879 - 2³ = 30820078871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30820078871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15410039439 + 15410039440.

It is an arithmetic number, because the mean of its divisors is an integer number (15410039440).

Almost surely, 2^30820078879 is an apocalyptic number.

30820078879 is a deficient number, since it is larger than the sum of its proper divisors (1).

30820078879 is an equidigital number, since it uses as much as digits as its factorization.

30820078879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 30820078879 in words is "thirty billion, eight hundred twenty million, seventy-eight thousand, eight hundred seventy-nine".