30905662712 has 16 divisors (see below), whose sum is σ = 57962970360. Its totient is φ = 15448870624.

The previous prime is 30905662687. The next prime is 30905662717. The reversal of 30905662712 is 21726650903.

It is a self number, because there is not a number n which added to its sum of digits gives 30905662712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30905662717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461798 + ... + 524469.

Almost surely, 2^30905662712 is an apocalyptic number.

It is an amenable number.

30905662712 is a deficient number, since it is larger than the sum of its proper divisors (27057307648).

30905662712 is a wasteful number, since it uses less digits than its factorization.

30905662712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990190 (or 990186 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 30905662712 in words is "thirty billion, nine hundred five million, six hundred sixty-two thousand, seven hundred twelve".