45044036521 has 4 divisors (see below), whose sum is σ = 49138948944. Its totient is φ = 40949124100.

The previous prime is 45044036491. The next prime is 45044036549. The reversal of 45044036521 is 12563044054.

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.

It is a cyclic number.

It is not a de Polignac number, because 45044036521 - 2¹¹ = 45044034473 is a prime.

It is a super-2 number, since 2×45044036521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45044036561) 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, 2047456195 + ... + 2047456216.

It is an arithmetic number, because the mean of its divisors is an integer number (12284737236).

Almost surely, 2^45044036521 is an apocalyptic number.

It is an amenable number.

45044036521 is a deficient number, since it is larger than the sum of its proper divisors (4094912423).

45044036521 is a wasteful number, since it uses less digits than its factorization.

45044036521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094912422.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 45044036521 in words is "forty-five billion, forty-four million, thirty-six thousand, five hundred twenty-one".