45840104021 has 2 divisors, whose sum is σ = 45840104022. Its totient is φ = 45840104020.

The previous prime is 45840103987. The next prime is 45840104111. The reversal of 45840104021 is 12040104854.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40465747921 + 5374356100 = 201161^2 + 73310^2 .

It is a cyclic number.

It is not a de Polignac number, because 45840104021 - 2²⁶ = 45772995157 is a prime.

It is a super-3 number, since 3×45840104021³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45840103021) 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, 22920052010 + 22920052011.

It is an arithmetic number, because the mean of its divisors is an integer number (22920052011).

Almost surely, 2^45840104021 is an apocalyptic number.

It is an amenable number.

45840104021 is a deficient number, since it is larger than the sum of its proper divisors (1).

45840104021 is an equidigital number, since it uses as much as digits as its factorization.

45840104021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 45840104021 its reverse (12040104854), we get a palindrome (57880208875).

The spelling of 45840104021 in words is "forty-five billion, eight hundred forty million, one hundred four thousand, twenty-one".