30894521024656 has 45 divisors (see below), whose sum is σ = 59962518648441. Its totient is φ = 15420369534336.

The previous prime is 30894521024651. The next prime is 30894521024671. The reversal of 30894521024656 is 65642012549803.

The square root of 30894521024656 is 5558284.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1626594144400 + 29267926880256 = 1275380^2 + 5409984^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30894521024597 and 30894521024606.

It is not an unprimeable number, because it can be changed into a prime (30894521024651) 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 8 ways as a sum of consecutive naturals, for example, 20832447691 + ... + 20832449173.

Almost surely, 2^{30894521024656} is an apocalyptic number.

30894521024656 is the 5558284-th square number.

It is an amenable number.

30894521024656 is a deficient number, since it is larger than the sum of its proper divisors (29067997623785).

30894521024656 is an frugal number, since it uses more digits than its factorization.

30894521024656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 30894521024656 in words is "thirty trillion, eight hundred ninety-four billion, five hundred twenty-one million, twenty-four thousand, six hundred fifty-six".