45464444221 has 4 divisors (see below), whose sum is σ = 51959364832. Its totient is φ = 38969523612.

The previous prime is 45464444219. The next prime is 45464444261. The reversal of 45464444221 is 12244446454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12244446454 = 2 ⋅6122223227.

It is a cyclic number.

It is not a de Polignac number, because 45464444221 - 2¹ = 45464444219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45464444261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3247460295 + ... + 3247460308.

It is an arithmetic number, because the mean of its divisors is an integer number (12989841208).

Almost surely, 2^45464444221 is an apocalyptic number.

It is an amenable number.

45464444221 is a deficient number, since it is larger than the sum of its proper divisors (6494920611).

45464444221 is an equidigital number, since it uses as much as digits as its factorization.

45464444221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6494920610.

The product of its digits is 491520, while the sum is 40.

The spelling of 45464444221 in words is "forty-five billion, four hundred sixty-four million, four hundred forty-four thousand, two hundred twenty-one".