44386895521 has 4 divisors (see below), whose sum is σ = 44398905412. Its totient is φ = 44374885632.

The previous prime is 44386895503. The next prime is 44386895533. The reversal of 44386895521 is 12559868344.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12080427921 + 32306467600 = 109911^2 + 179740^2 .

It is a cyclic number.

It is not a de Polignac number, because 44386895521 - 2⁵ = 44386895489 is a prime.

It is a super-2 number, since 2×44386895521² (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 (44386895561) 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, 5999400 + ... + 6006793.

It is an arithmetic number, because the mean of its divisors is an integer number (11099726353).

Almost surely, 2^44386895521 is an apocalyptic number.

It is an amenable number.

44386895521 is a deficient number, since it is larger than the sum of its proper divisors (12009891).

44386895521 is a wasteful number, since it uses less digits than its factorization.

44386895521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12009890.

The product of its digits is 8294400, while the sum is 55.

The spelling of 44386895521 in words is "forty-four billion, three hundred eighty-six million, eight hundred ninety-five thousand, five hundred twenty-one".