30529052821 has 2 divisors, whose sum is σ = 30529052822. Its totient is φ = 30529052820.

The previous prime is 30529052797. The next prime is 30529052837. The reversal of 30529052821 is 12825092503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30312551025 + 216501796 = 174105^2 + 14714^2 .

It is a cyclic number.

It is not a de Polignac number, because 30529052821 - 2¹³ = 30529044629 is a prime.

It is a super-2 number, since 2×30529052821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30529052321) 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 as a sum of consecutive naturals, namely, 15264526410 + 15264526411.

It is an arithmetic number, because the mean of its divisors is an integer number (15264526411).

Almost surely, 2^30529052821 is an apocalyptic number.

It is an amenable number.

30529052821 is a deficient number, since it is larger than the sum of its proper divisors (1).

30529052821 is an equidigital number, since it uses as much as digits as its factorization.

30529052821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 30529052821 in words is "thirty billion, five hundred twenty-nine million, fifty-two thousand, eight hundred twenty-one".