30463152821 has 4 divisors (see below), whose sum is σ = 30467536044. Its totient is φ = 30458769600.

The previous prime is 30463152817. The next prime is 30463152851. The reversal of 30463152821 is 12825136403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12825136403 = 269 ⋅47677087.

It can be written as a sum of positive squares in 2 ways, for example, as 11217139921 + 19246012900 = 105911^2 + 138730^2 .

It is a cyclic number.

It is not a de Polignac number, because 30463152821 - 2² = 30463152817 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 (30463152851) 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, 2181170 + ... + 2195091.

It is an arithmetic number, because the mean of its divisors is an integer number (7616884011).

Almost surely, 2^30463152821 is an apocalyptic number.

It is an amenable number.

30463152821 is a deficient number, since it is larger than the sum of its proper divisors (4383223).

30463152821 is an equidigital number, since it uses as much as digits as its factorization.

30463152821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4383222.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 30463152821 in words is "thirty billion, four hundred sixty-three million, one hundred fifty-two thousand, eight hundred twenty-one".