30428388387071 has 2 divisors, whose sum is σ = 30428388387072. Its totient is φ = 30428388387070.

The previous prime is 30428388387053. The next prime is 30428388387091. The reversal of 30428388387071 is 17078388382403.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30428388387071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30428388386995 and 30428388387013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30428388387091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15214194193535 + 15214194193536.

It is an arithmetic number, because the mean of its divisors is an integer number (15214194193536).

Almost surely, 2^{30428388387071} is an apocalyptic number.

30428388387071 is a deficient number, since it is larger than the sum of its proper divisors (1).

30428388387071 is an equidigital number, since it uses as much as digits as its factorization.

30428388387071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43352064, while the sum is 62.

The spelling of 30428388387071 in words is "thirty trillion, four hundred twenty-eight billion, three hundred eighty-eight million, three hundred eighty-seven thousand, seventy-one".