30012111993 has 16 divisors (see below), whose sum is σ = 40640557760. Its totient is φ = 19698209856.

The previous prime is 30012111991. The next prime is 30012112019. The reversal of 30012111993 is 39911121003.

It is a happy number.

It is not a de Polignac number, because 30012111993 - 2¹ = 30012111991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30012111993.

It is not an unprimeable number, because it can be changed into a prime (30012111991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240955 + ... + 343632.

It is an arithmetic number, because the mean of its divisors is an integer number (2540034860).

Almost surely, 2^30012111993 is an apocalyptic number.

It is an amenable number.

30012111993 is a deficient number, since it is larger than the sum of its proper divisors (10628445767).

30012111993 is a wasteful number, since it uses less digits than its factorization.

30012111993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584856.

The product of its (nonzero) digits is 1458, while the sum is 30.

Adding to 30012111993 its reverse (39911121003), we get a palindrome (69923232996).

The spelling of 30012111993 in words is "thirty billion, twelve million, one hundred eleven thousand, nine hundred ninety-three".