30123741521 has 2 divisors, whose sum is σ = 30123741522. Its totient is φ = 30123741520.

The previous prime is 30123741517. The next prime is 30123741533. The reversal of 30123741521 is 12514732103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29290611025 + 833130496 = 171145^2 + 28864^2 .

It is a cyclic number.

It is not a de Polignac number, because 30123741521 - 2² = 30123741517 is a prime.

It is not a weakly prime, because it can be changed into another prime (30123711521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061870760 + 15061870761.

It is an arithmetic number, because the mean of its divisors is an integer number (15061870761).

Almost surely, 2^30123741521 is an apocalyptic number.

It is an amenable number.

30123741521 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123741521 is an equidigital number, since it uses as much as digits as its factorization.

30123741521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 30123741521 in words is "thirty billion, one hundred twenty-three million, seven hundred forty-one thousand, five hundred twenty-one".