30195139811 has 2 divisors, whose sum is σ = 30195139812. Its totient is φ = 30195139810.

The previous prime is 30195139757. The next prime is 30195139813. The reversal of 30195139811 is 11893159103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30195139811 - 2¹⁸ = 30194877667 is a prime.

Together with 30195139813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30195139813) 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, 15097569905 + 15097569906.

It is an arithmetic number, because the mean of its divisors is an integer number (15097569906).

Almost surely, 2^30195139811 is an apocalyptic number.

30195139811 is a deficient number, since it is larger than the sum of its proper divisors (1).

30195139811 is an equidigital number, since it uses as much as digits as its factorization.

30195139811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 41.

The spelling of 30195139811 in words is "thirty billion, one hundred ninety-five million, one hundred thirty-nine thousand, eight hundred eleven".