30676656251 has 16 divisors (see below), whose sum is σ = 31390156800. Its totient is φ = 29971935840.

The previous prime is 30676656223. The next prime is 30676656271. The reversal of 30676656251 is 15265667603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30676656251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30676656196 and 30676656205.

It is not an unprimeable number, because it can be changed into a prime (30676656221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4894946 + ... + 4901208.

It is an arithmetic number, because the mean of its divisors is an integer number (1961884800).

Almost surely, 2^30676656251 is an apocalyptic number.

30676656251 is a deficient number, since it is larger than the sum of its proper divisors (713500549).

30676656251 is a wasteful number, since it uses less digits than its factorization.

30676656251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6946.

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 30676656251 in words is "thirty billion, six hundred seventy-six million, six hundred fifty-six thousand, two hundred fifty-one".