30533353997 has 2 divisors, whose sum is σ = 30533353998. Its totient is φ = 30533353996.

The previous prime is 30533353973. The next prime is 30533354009. The reversal of 30533353997 is 79935333503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26002852516 + 4530501481 = 161254^2 + 67309^2 .

It is a cyclic number.

It is not a de Polignac number, because 30533353997 - 2⁶ = 30533353933 is a prime.

It is a super-2 number, since 2×30533353997² (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 (30533353937) 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, 15266676998 + 15266676999.

It is an arithmetic number, because the mean of its divisors is an integer number (15266676999).

Almost surely, 2^30533353997 is an apocalyptic number.

It is an amenable number.

30533353997 is a deficient number, since it is larger than the sum of its proper divisors (1).

30533353997 is an equidigital number, since it uses as much as digits as its factorization.

30533353997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3444525, while the sum is 50.

The spelling of 30533353997 in words is "thirty billion, five hundred thirty-three million, three hundred fifty-three thousand, nine hundred ninety-seven".