16325302021 has 24 divisors (see below), whose sum is σ = 19657564920. Its totient is φ = 13502305152.

The previous prime is 16325301989. The next prime is 16325302031. The reversal of 16325302021 is 12020352361.

It can be written as a sum of positive squares in 4 ways, for example, as 7295551396 + 9029750625 = 85414^2 + 95025^2 .

It is not a de Polignac number, because 16325302021 - 2⁵ = 16325301989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16325302031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3631251 + ... + 3635743.

It is an arithmetic number, because the mean of its divisors is an integer number (819065205).

Almost surely, 2^16325302021 is an apocalyptic number.

It is an amenable number.

16325302021 is a deficient number, since it is larger than the sum of its proper divisors (3332262899).

16325302021 is a wasteful number, since it uses less digits than its factorization.

16325302021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7093 (or 7086 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 16325302021 its reverse (12020352361), we get a palindrome (28345654382).

The spelling of 16325302021 in words is "sixteen billion, three hundred twenty-five million, three hundred two thousand, twenty-one".