45030202821 has 12 divisors (see below), whose sum is σ = 65248815372. Its totient is φ = 29925432576.

The previous prime is 45030202813. The next prime is 45030202853. The reversal of 45030202821 is 12820203054.

45030202821 is a `hidden beast` number, since 450 + 3 + 0 + 202 + 8 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23169101796 + 21861101025 = 152214^2 + 147855^2 .

It is not a de Polignac number, because 45030202821 - 2³ = 45030202813 is a prime.

It is a super-2 number, since 2×45030202821² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45030202891) 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 11 ways as a sum of consecutive naturals, for example, 7888876 + ... + 7894581.

It is an arithmetic number, because the mean of its divisors is an integer number (5437401281).

Almost surely, 2^45030202821 is an apocalyptic number.

It is an amenable number.

45030202821 is a deficient number, since it is larger than the sum of its proper divisors (20218612551).

45030202821 is a wasteful number, since it uses less digits than its factorization.

45030202821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15783780 (or 15783777 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 45030202821 its reverse (12820203054), we get a palindrome (57850405875).

The spelling of 45030202821 in words is "forty-five billion, thirty million, two hundred two thousand, eight hundred twenty-one".