30533245621 has 4 divisors (see below), whose sum is σ = 30562804492. Its totient is φ = 30503686752.

The previous prime is 30533245619. The next prime is 30533245627. The reversal of 30533245621 is 12654233503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28259291025 + 2273954596 = 168105^2 + 47686^2 .

It is a cyclic number.

It is not a de Polignac number, because 30533245621 - 2¹ = 30533245619 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 (30533245627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14777886 + ... + 14779951.

It is an arithmetic number, because the mean of its divisors is an integer number (7640701123).

Almost surely, 2^30533245621 is an apocalyptic number.

It is an amenable number.

30533245621 is a deficient number, since it is larger than the sum of its proper divisors (29558871).

30533245621 is a wasteful number, since it uses less digits than its factorization.

30533245621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29558870.

The product of its (nonzero) digits is 64800, while the sum is 34.

The spelling of 30533245621 in words is "thirty billion, five hundred thirty-three million, two hundred forty-five thousand, six hundred twenty-one".