30542720056 has 16 divisors (see below), whose sum is σ = 57396879000. Its totient is φ = 15236885664.

The previous prime is 30542720053. The next prime is 30542720071. The reversal of 30542720056 is 65002724503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542720053) 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 in 3 ways as a sum of consecutive naturals, for example, 4305531 + ... + 4312618.

Almost surely, 2^30542720056 is an apocalyptic number.

It is an amenable number.

30542720056 is a deficient number, since it is larger than the sum of its proper divisors (26854158944).

30542720056 is a wasteful number, since it uses less digits than its factorization.

30542720056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8618598 (or 8618594 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The spelling of 30542720056 in words is "thirty billion, five hundred forty-two million, seven hundred twenty thousand, fifty-six".