30306899918881 has 16 divisors (see below), whose sum is σ = 31215506137920. Its totient is φ = 29403050379840.

The previous prime is 30306899918833. The next prime is 30306899918951. The reversal of 30306899918881 is 18881999860303.

It is a cyclic number.

It is not a de Polignac number, because 30306899918881 - 2⁹ = 30306899918369 is a prime.

It is a super-2 number, since 2×30306899918881² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30306899918821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47279286 + ... + 47916016.

It is an arithmetic number, because the mean of its divisors is an integer number (1950969133620).

Almost surely, 2^{30306899918881} is an apocalyptic number.

It is an amenable number.

30306899918881 is a deficient number, since it is larger than the sum of its proper divisors (908606219039).

30306899918881 is a wasteful number, since it uses less digits than its factorization.

30306899918881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640464.

The product of its (nonzero) digits is 161243136, while the sum is 73.

The spelling of 30306899918881 in words is "thirty trillion, three hundred six billion, eight hundred ninety-nine million, nine hundred eighteen thousand, eight hundred eighty-one".