30121909894 has 8 divisors (see below), whose sum is σ = 45218756520. Its totient is φ = 15048991056.

The previous prime is 30121909879. The next prime is 30121909907. The reversal of 30121909894 is 49890912103.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5978799 + ... + 5983834.

It is an arithmetic number, because the mean of its divisors is an integer number (5652344565).

Almost surely, 2^30121909894 is an apocalyptic number.

30121909894 is a deficient number, since it is larger than the sum of its proper divisors (15096846626).

30121909894 is a wasteful number, since it uses less digits than its factorization.

30121909894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11963894.

The product of its (nonzero) digits is 139968, while the sum is 46.

The spelling of 30121909894 in words is "thirty billion, one hundred twenty-one million, nine hundred nine thousand, eight hundred ninety-four".