30920656473 has 64 divisors (see below), whose sum is σ = 53701939200. Its totient is φ = 17214664320.

The previous prime is 30920656471. The next prime is 30920656517. The reversal of 30920656473 is 37465602903.

30920656473 is a `hidden beast` number, since 30 + 92 + 0 + 65 + 6 + 473 = 666.

It is not a de Polignac number, because 30920656473 - 2¹ = 30920656471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30920656471) 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 63 ways as a sum of consecutive naturals, for example, 6840108 + ... + 6844626.

It is an arithmetic number, because the mean of its divisors is an integer number (839092800).

Almost surely, 2^30920656473 is an apocalyptic number.

It is an amenable number.

30920656473 is a deficient number, since it is larger than the sum of its proper divisors (22781282727).

30920656473 is a wasteful number, since it uses less digits than its factorization.

30920656473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5459 (or 5453 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 30920656473 in words is "thirty billion, nine hundred twenty million, six hundred fifty-six thousand, four hundred seventy-three".