30123040757 has 2 divisors, whose sum is σ = 30123040758. Its totient is φ = 30123040756.

The previous prime is 30123040723. The next prime is 30123040763. The reversal of 30123040757 is 75704032103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16768696036 + 13354344721 = 129494^2 + 115561^2 .

It is a cyclic number.

It is not a de Polignac number, because 30123040757 - 2⁶ = 30123040693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30123040777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061520378 + 15061520379.

It is an arithmetic number, because the mean of its divisors is an integer number (15061520379).

Almost surely, 2^30123040757 is an apocalyptic number.

It is an amenable number.

30123040757 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123040757 is an equidigital number, since it uses as much as digits as its factorization.

30123040757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 32.

The spelling of 30123040757 in words is "thirty billion, one hundred twenty-three million, forty thousand, seven hundred fifty-seven".