30664220291 has 2 divisors, whose sum is σ = 30664220292. Its totient is φ = 30664220290.

The previous prime is 30664220267. The next prime is 30664220297. The reversal of 30664220291 is 19202246603.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30664220291 - 2¹⁴ = 30664203907 is a prime.

It is a super-2 number, since 2×30664220291² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30664220297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15332110145 + 15332110146.

It is an arithmetic number, because the mean of its divisors is an integer number (15332110146).

Almost surely, 2^30664220291 is an apocalyptic number.

30664220291 is a deficient number, since it is larger than the sum of its proper divisors (1).

30664220291 is an equidigital number, since it uses as much as digits as its factorization.

30664220291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 30664220291 its reverse (19202246603), we get a palindrome (49866466894).

The spelling of 30664220291 in words is "thirty billion, six hundred sixty-four million, two hundred twenty thousand, two hundred ninety-one".