30009999671 has 2 divisors, whose sum is σ = 30009999672. Its totient is φ = 30009999670.

The previous prime is 30009999661. The next prime is 30009999707. The reversal of 30009999671 is 17699990003.

It is a weak prime.

It is an emirp because it is prime and its reverse (17699990003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30009999671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30009999641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15004999835 + 15004999836.

It is an arithmetic number, because the mean of its divisors is an integer number (15004999836).

Almost surely, 2^30009999671 is an apocalyptic number.

30009999671 is a deficient number, since it is larger than the sum of its proper divisors (1).

30009999671 is an equidigital number, since it uses as much as digits as its factorization.

30009999671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 826686, while the sum is 53.

The spelling of 30009999671 in words is "thirty billion, nine million, nine hundred ninety-nine thousand, six hundred seventy-one".