30778904159 has 2 divisors, whose sum is σ = 30778904160. Its totient is φ = 30778904158.

The previous prime is 30778904113. The next prime is 30778904207. The reversal of 30778904159 is 95140987703.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30778904159 - 2¹² = 30778900063 is a prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 30778904159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30778904059) 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, 15389452079 + 15389452080.

It is an arithmetic number, because the mean of its divisors is an integer number (15389452080).

Almost surely, 2^30778904159 is an apocalyptic number.

30778904159 is a deficient number, since it is larger than the sum of its proper divisors (1).

30778904159 is an equidigital number, since it uses as much as digits as its factorization.

30778904159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 30778904159 in words is "thirty billion, seven hundred seventy-eight million, nine hundred four thousand, one hundred fifty-nine".