30855043481 has 2 divisors, whose sum is σ = 30855043482. Its totient is φ = 30855043480.

The previous prime is 30855043463. The next prime is 30855043507. The reversal of 30855043481 is 18434055803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21165594256 + 9689449225 = 145484^2 + 98435^2 .

It is an emirp because it is prime and its reverse (18434055803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30855043481 - 2²² = 30850849177 is a prime.

It is a super-2 number, since 2×30855043481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30855043981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15427521740 + 15427521741.

It is an arithmetic number, because the mean of its divisors is an integer number (15427521741).

Almost surely, 2^30855043481 is an apocalyptic number.

It is an amenable number.

30855043481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30855043481 is an equidigital number, since it uses as much as digits as its factorization.

30855043481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 30855043481 in words is "thirty billion, eight hundred fifty-five million, forty-three thousand, four hundred eighty-one".