45444532221 has 64 divisors (see below), whose sum is σ = 76810567680. Its totient is φ = 26285688000.

The previous prime is 45444532201. The next prime is 45444532223. The reversal of 45444532221 is 12223544454.

It is not a de Polignac number, because 45444532221 - 2⁷ = 45444532093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45444532223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3141876 + ... + 3156306.

It is an arithmetic number, because the mean of its divisors is an integer number (1200165120).

Almost surely, 2^45444532221 is an apocalyptic number.

It is an amenable number.

45444532221 is a deficient number, since it is larger than the sum of its proper divisors (31366035459).

45444532221 is a wasteful number, since it uses less digits than its factorization.

45444532221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14935 (or 14929 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The spelling of 45444532221 in words is "forty-five billion, four hundred forty-four million, five hundred thirty-two thousand, two hundred twenty-one".