30123099949 has 2 divisors, whose sum is σ = 30123099950. Its totient is φ = 30123099948.

The previous prime is 30123099917. The next prime is 30123099959. The reversal of 30123099949 is 94999032103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16639710025 + 13483389924 = 128995^2 + 116118^2 .

It is a cyclic number.

It is not a de Polignac number, because 30123099949 - 2⁵ = 30123099917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30123099959) 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, 15061549974 + 15061549975.

It is an arithmetic number, because the mean of its divisors is an integer number (15061549975).

Almost surely, 2^30123099949 is an apocalyptic number.

It is an amenable number.

30123099949 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123099949 is an equidigital number, since it uses as much as digits as its factorization.

30123099949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 472392, while the sum is 49.

The spelling of 30123099949 in words is "thirty billion, one hundred twenty-three million, ninety-nine thousand, nine hundred forty-nine".