30471557447 has 2 divisors, whose sum is σ = 30471557448. Its totient is φ = 30471557446.

The previous prime is 30471557407. The next prime is 30471557449. The reversal of 30471557447 is 74475517403.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30471557447 - 2¹⁸ = 30471295303 is a prime.

Together with 30471557449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30471557449) 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, 15235778723 + 15235778724.

It is an arithmetic number, because the mean of its divisors is an integer number (15235778724).

Almost surely, 2^30471557447 is an apocalyptic number.

30471557447 is a deficient number, since it is larger than the sum of its proper divisors (1).

30471557447 is an equidigital number, since it uses as much as digits as its factorization.

30471557447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1646400, while the sum is 47.

The spelling of 30471557447 in words is "thirty billion, four hundred seventy-one million, five hundred fifty-seven thousand, four hundred forty-seven".