30240566021 has 8 divisors (see below), whose sum is σ = 31111104024. Its totient is φ = 29376359680.

The previous prime is 30240565997. The next prime is 30240566023. The reversal of 30240566021 is 12066504203.

It can be written as a sum of positive squares in 4 ways, for example, as 1750501921 + 28490064100 = 41839^2 + 168790^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30240566021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30240566023) 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 7 ways as a sum of consecutive naturals, for example, 1573226 + ... + 1592331.

It is an arithmetic number, because the mean of its divisors is an integer number (3888888003).

Almost surely, 2^30240566021 is an apocalyptic number.

It is an amenable number.

30240566021 is a deficient number, since it is larger than the sum of its proper divisors (870538003).

30240566021 is a wasteful number, since it uses less digits than its factorization.

30240566021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3165831.

The product of its (nonzero) digits is 8640, while the sum is 29.

The spelling of 30240566021 in words is "thirty billion, two hundred forty million, five hundred sixty-six thousand, twenty-one".