45441538821 has 48 divisors (see below), whose sum is σ = 77928168448. Its totient is φ = 24968736000.

The previous prime is 45441538811. The next prime is 45441538847. The reversal of 45441538821 is 12883514454.

45441538821 is a `hidden beast` number, since 4 + 54 + 41 + 538 + 8 + 21 = 666.

It is not a de Polignac number, because 45441538821 - 2¹⁰ = 45441537797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45441538811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232521 + ... + 380721.

Almost surely, 2^45441538821 is an apocalyptic number.

It is an amenable number.

45441538821 is a deficient number, since it is larger than the sum of its proper divisors (32486629627).

45441538821 is a wasteful number, since it uses less digits than its factorization.

45441538821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148402 (or 148399 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The spelling of 45441538821 in words is "forty-five billion, four hundred forty-one million, five hundred thirty-eight thousand, eight hundred twenty-one".