30621939611 has 2 divisors, whose sum is σ = 30621939612. Its totient is φ = 30621939610.

The previous prime is 30621939587. The next prime is 30621939619. The reversal of 30621939611 is 11693912603.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30621939611 is a prime.

It is not a weakly prime, because it can be changed into another prime (30621939619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15310969805 + 15310969806.

It is an arithmetic number, because the mean of its divisors is an integer number (15310969806).

Almost surely, 2^30621939611 is an apocalyptic number.

30621939611 is a deficient number, since it is larger than the sum of its proper divisors (1).

30621939611 is an equidigital number, since it uses as much as digits as its factorization.

30621939611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 41.

The spelling of 30621939611 in words is "thirty billion, six hundred twenty-one million, nine hundred thirty-nine thousand, six hundred eleven".