45453550261221 has 24 divisors (see below), whose sum is σ = 66142555038144. Its totient is φ = 30077455387200.

The previous prime is 45453550261181. The next prime is 45453550261253. The reversal of 45453550261221 is 12216205535454.

45453550261221 is a `hidden beast` number, since 4 + 5 + 4 + 5 + 3 + 5 + 5 + 0 + 2 + 612 + 21 = 666.

It is not a de Polignac number, because 45453550261221 - 2³⁹ = 44903794447333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45453550261421) 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, 7692046 + ... + 12250496.

It is an arithmetic number, because the mean of its divisors is an integer number (2755939793256).

Almost surely, 2^{45453550261221} is an apocalyptic number.

It is an amenable number.

45453550261221 is a deficient number, since it is larger than the sum of its proper divisors (20689004776923).

45453550261221 is a wasteful number, since it uses less digits than its factorization.

45453550261221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4566681 (or 4566678 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

Adding to 45453550261221 its reverse (12216205535454), we get a palindrome (57669755796675).

The spelling of 45453550261221 in words is "forty-five trillion, four hundred fifty-three billion, five hundred fifty million, two hundred sixty-one thousand, two hundred twenty-one".