30646520473 has 2 divisors, whose sum is σ = 30646520474. Its totient is φ = 30646520472.

The previous prime is 30646520467. The next prime is 30646520491. The reversal of 30646520473 is 37402564603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17136642649 + 13509877824 = 130907^2 + 116232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30646520473 is a prime.

It is not a weakly prime, because it can be changed into another prime (30646520413) 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, 15323260236 + 15323260237.

It is an arithmetic number, because the mean of its divisors is an integer number (15323260237).

Almost surely, 2^30646520473 is an apocalyptic number.

It is an amenable number.

30646520473 is a deficient number, since it is larger than the sum of its proper divisors (1).

30646520473 is an equidigital number, since it uses as much as digits as its factorization.

30646520473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 30646520473 in words is "thirty billion, six hundred forty-six million, five hundred twenty thousand, four hundred seventy-three".