30666330493 has 2 divisors, whose sum is σ = 30666330494. Its totient is φ = 30666330492.

The previous prime is 30666330377. The next prime is 30666330547. The reversal of 30666330493 is 39403366603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21303445849 + 9362884644 = 145957^2 + 96762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30666330493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30666330293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15333165246 + 15333165247.

It is an arithmetic number, because the mean of its divisors is an integer number (15333165247).

Almost surely, 2^30666330493 is an apocalyptic number.

It is an amenable number.

30666330493 is a deficient number, since it is larger than the sum of its proper divisors (1).

30666330493 is an equidigital number, since it uses as much as digits as its factorization.

30666330493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 629856, while the sum is 43.

The spelling of 30666330493 in words is "thirty billion, six hundred sixty-six million, three hundred thirty thousand, four hundred ninety-three".