30033749957 has 2 divisors, whose sum is σ = 30033749958. Its totient is φ = 30033749956.

The previous prime is 30033749923. The next prime is 30033749969. The reversal of 30033749957 is 75994733003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25243172161 + 4790577796 = 158881^2 + 69214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30033749957 is a prime.

It is a super-2 number, since 2×30033749957² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30033749987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15016874978 + 15016874979.

It is an arithmetic number, because the mean of its divisors is an integer number (15016874979).

Almost surely, 2^30033749957 is an apocalyptic number.

It is an amenable number.

30033749957 is a deficient number, since it is larger than the sum of its proper divisors (1).

30033749957 is an equidigital number, since it uses as much as digits as its factorization.

30033749957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2143260, while the sum is 50.

The spelling of 30033749957 in words is "thirty billion, thirty-three million, seven hundred forty-nine thousand, nine hundred fifty-seven".