30111099979 has 2 divisors, whose sum is σ = 30111099980. Its totient is φ = 30111099978.

The previous prime is 30111099923. The next prime is 30111100007. The reversal of 30111099979 is 97999011103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30111099979 - 2⁹ = 30111099467 is a prime.

It is not a weakly prime, because it can be changed into another prime (30111099079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15055549989 + 15055549990.

It is an arithmetic number, because the mean of its divisors is an integer number (15055549990).

Almost surely, 2^30111099979 is an apocalyptic number.

30111099979 is a deficient number, since it is larger than the sum of its proper divisors (1).

30111099979 is an equidigital number, since it uses as much as digits as its factorization.

30111099979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137781, while the sum is 49.

The spelling of 30111099979 in words is "thirty billion, one hundred eleven million, ninety-nine thousand, nine hundred seventy-nine".