30152409821 has 4 divisors (see below), whose sum is σ = 30184590492. Its totient is φ = 30120229152.

The previous prime is 30152409809. The next prime is 30152409823. The reversal of 30152409821 is 12890425103.

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 16320062500 + 13832347321 = 127750^2 + 117611^2 .

It is a cyclic number.

It is not a de Polignac number, because 30152409821 - 2¹⁸ = 30152147677 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 (30152409823) 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 3 ways as a sum of consecutive naturals, for example, 16088930 + ... + 16090803.

It is an arithmetic number, because the mean of its divisors is an integer number (7546147623).

Almost surely, 2^30152409821 is an apocalyptic number.

It is an amenable number.

30152409821 is a deficient number, since it is larger than the sum of its proper divisors (32180671).

30152409821 is an equidigital number, since it uses as much as digits as its factorization.

30152409821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32180670.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 30152409821 in words is "thirty billion, one hundred fifty-two million, four hundred nine thousand, eight hundred twenty-one".