45645244221 has 8 divisors (see below), whose sum is σ = 60873429664. Its totient is φ = 30423610800.

The previous prime is 45645244181. The next prime is 45645244241. The reversal of 45645244221 is 12244254654.

45645244221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45645244221 - 2¹³ = 45645236029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45645244221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45645244241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621726 + ... + 1649631.

It is an arithmetic number, because the mean of its divisors is an integer number (7609178708).

Almost surely, 2^45645244221 is an apocalyptic number.

It is an amenable number.

45645244221 is a deficient number, since it is larger than the sum of its proper divisors (15228185443).

45645244221 is a wasteful number, since it uses less digits than its factorization.

45645244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276011.

The product of its digits is 307200, while the sum is 39.

Adding to 45645244221 its reverse (12244254654), we get a palindrome (57889498875).

The spelling of 45645244221 in words is "forty-five billion, six hundred forty-five million, two hundred forty-four thousand, two hundred twenty-one".